ライフサイエンスコーパス: ethene

1 le of dechlorination beyond DCE to non-toxic ethene.

2 )/1,2-dichloroethane (1,2-DCA) completely to ethene.

3 2-difluoro-1-iodo-1-(2'-methoxyethoxymethoxy)ethene.

4 ance that is related to biotransformation of ethene.

5 richloroethene to the innocuous end product, ethene.

6 rachloroethene (PCE) and trichloroethene, to ethene.

7 and trichloroethene (TCE) to nonchlorinated ethene.

8 icrobial populations to the nontoxic product ethene.

9 TOC) and VC was reductively dechlorinated to ethene.

10 e dihaloelimination of 1,2-dichloroethane to ethene.

11 nal genes associated with PCE degradation to ethene.

12 small molecules such as hydrogen, CO2 , and ethene.

13 t dihaloelimination of 1,2-dichloroethane to ethene.

14 reaction with (Z)- or (E)-bis(phenylsulfonyl)ethene.

15 for reductive dehalogenation of chlorinated ethenes.

16 and eight chlorinated methanes, ethanes, and ethenes.

17 the reductive dehalogenation of chlorinated ethenes.

18 ddition to biodegradation of the chlorinated ethenes.

19 eral PCB congeners when grown on chlorinated ethenes.

20 environmental transformations of chlorinated ethenes.

21 oides) and biotic degradation of chlorinated ethenes.

22 ch to remedy sites impacted with chlorinated ethenes.

23 th starting from 1,1- or 1,2-bis(2-nitroaryl)ethenes.

24 s of delta(13)C for chlorinated benzenes and ethenes.

25 a pi* orbital followed by C-Cl cleavage) in ethenes.

26 the reductive dechlorination of chlorinated ethenes.

27 tween transformation pathways of chlorinated ethenes.

28 tudies of in situ attenuation of chlorinated ethenes.

29 tion structures analogous to the ketene plus ethene [2 + 2] cycloaddition reaction were also located;

30 -(1E,1'E)-2,2'-(2,5-diiodo-1,4-phenylene)bis(ethene-2,1-diyl)bis(10-hexyl-10H -phenothiazine) was rea

31 llowing complete sulfate reduction, yielding ethene (25%), VC (67%), and cis-DCE (8%).

32 4,4-di-iso-propyl-carboxy-cyclopent-1-en yl]-ethene (3b2)) to the "heptamer" (3b7, a pentadecaene).

33 yridyl)ethane (3), and (E)-1,2-bis(4-pyridyl)ethene (4) afforded cluster complexes of the general for

34 ane (3), 1,2-bis(4,6-dimethyl-s-triazin-2-yl)ethene (5), 1,2,3-tris(4,6-dimethyl-s-triazin-2-yl)cyclo

35 pseudo-steady-state transformation of PCE to ethene (98%) and VC (2%) at 2.4 nM of H(2).

36 s (NMOG), total hydrocarbons (THC), methane, ethene, acetaldehyde, formaldehyde, ethanol, N2O, and NH

37 o- and 1-trifluoromethyl-2-substituted trans-ethenes allowed the study of changes in the electronic a

38 moval was faster than with either methane or ethene alone, consistent with the idea that methanotroph

39 -1 were correlated to improved conversion to ethene, an observation which suggests there could be a c

40 he E and Z isomers of 4,4'-bis(ethynylphenyl)ethene and a backbone-rigidified cyclohexenyl derivative

41 d epoxidation that produces epoxyethane from ethene and chlorooxirane from VC, but the enzymes involv

42 A synthesis of ethene and ethyne derivatives carrying the anionic -C(BC

43 Using delta(13)C values determined for ethene and for chlorinated ethenes at a contaminated fie

44 ng environmentally benign products (biomass, ethene and inorganic chloride).

45 The ratio of the rates of hydrogenation of ethene and isobutene is much higher on clusters encapsul

46 e responsible for cis-trans isomerization in ethene and other acyclic alkenes.

47 Quantitative proteomics data from ethene and phenylpropanoid pathways indicate additional

48 Di-sigma-bonded ethene and pi-bonded ethene on the clusters were identif

49 Methane was converted to light olefins (ethene and propene) or higher hydrocarbons in a continuo

50 The method was extended to the study of ethene and propene; the rate of reaction of propene was

51 to iridium followed by beta-H elimination of ethene and reductive elimination of methane.

52 n diameter were found in cultures containing ethene and sulfate, and quantitative PCR showed large in

53 t the beta-agostic 3 reluctantly coordinates ethene and that 3 is the ground state for this ethylene

54 er aerobic conditions, etheneotrophs oxidize ethene and VC, while VC-assimilators can use VC as their

55 nA genes were cotranscribed and inducible by ethene and VC.

56 Mycobacterium strains that grow on ethene and vinyl chloride (VC) are widely distributed in

57 hydrocarbon contaminants such as chlorinated ethenes and ethanes due to in situ degradation, but defi

58 Burkholderia cepacia G4 for both chlorinated ethenes and naphthalene oxidation.

59 was found to be smaller for the chlorinated ethenes and remarkably deviating from an inverse square

60 ions are measured by CRDS at 6150.30 cm(-1) (ethene) and 6512.99 cm(-1) (ethyne) without the need for

61 in high acetaldehyde, formaldehyde, ethanol, ethene, and acetylene emissions when compared to E30 or

62 xide (NO(2)), carbon monoxide, formaldehyde, ethene, and black carbon (BC), as well as optical proper

63 carbon dioxide to products such as methane, ethene, and ethanol.

64 increased; NOx and NMHC decreased; while CO, ethene, and N2O emissions were not discernibly affected.

65 Methane, ethene, and VC were added to the microcosms singly or as

66 ed, as evidenced by generation of acetylene, ethene, and/or ethane daughter products.

67 from 2 to 60 mug/L (MTBE, BTEX, chlorinated ethenes, and benzenes) and 60-97 mug/L for delta(2)H (MT

68 ured compounds such as chlorinated benzenes, ethenes, and ethanes.

69 we obtain selectivity of 79% propene and 12% ethene, another desired alkene.

70 orylenes to unsaturated CC bonds, ethyne and ethene are chosen as model compounds.

71 However, the microbial processes that affect ethene are not well characterized and poor mass balance

72 Chlorinated ethenes are commonly found in contaminated groundwater.

73 Chlorinated ethenes are the most prevalent ground-water pollutants,

74 Pd, Ru, and Fe catalysis with only water and ethene as side-products.

75 ive preparation of a range of styrenes using ethene as the alkene coupling partner.

76 nt trichloroethene (1.5-2.8 mM) and produced ethene as the main product.

77 cosm was transferred into growth medium with ethene as the only electron donor (except for trace amou

78 yze the initial reactions in both the VC and ethene assimilation pathways.

79 f propene was found to be 1.25 times that of ethene at 23 degrees C.

80 five distinct locations dechlorinated PCE-to-ethene at pH 5.5 and pH 7.2.

81 es determined for ethene and for chlorinated ethenes at a contaminated field site undergoing bioremed

82 to the long-term degradation of chlorinated ethenes at this field site.

83 sfer (OAT) to unsaturated hydrocarbons, e.g. ethene, at thermal conditions.

84 ng groundwater, mass transfer of chlorinated ethenes between mobile groundwater and stationary biofil

85 tal results on dehalogenation of chlorinated ethenes both in well-mixed systems and in situations whe

86 sensitivity (0.5 nM trans-1,2-bis(4-pyridyl)ethene (BPE)) and excellent reproducibility (~15% relati

87 )](PF(6))(2) (2Z) and [((E)-1,2-bis(biphenyl)ethene-bpy)Ru(bpy)(2)](PF(6))(2) (2E), were compared to

88 n of these complexes, [((Z)-1,2-bis(biphenyl)ethene-bpy)Ru(bpy)(2)](PF(6))(2) (2Z) and [((E)-1,2-bis(

89 rogen bond (CH...N) between the six-membered ethene bridge and the azole substituents.

90 An increase in the size of the ethene bridge in the cycloalkenone series was found to b

91 The effect of the size of the ethene bridge on the structural and spectral properties

92 rylethenes (DAEs) based on the unsymmetrical ethene "bridge" bearing heterocycles of the different na

93 be introduced at the 4- or 5-position of the ethene "bridge", as well as into the aryl moieties.

94 d symmetrical (cyclohexene and cyclopentene) ethene bridges.

95 alkyl derivatives-synthesized by reaction of ethene, but-1-ene, and hex-1-ene with a dimeric calcium

96 /mol, are much lower than that of the parent ethene-butadiene reaction, 28 kcal/mol, even though the

97 e determined during dechlorination of TCE to ethene by a mixed Dehalococcoides (Dhc) culture.

98 s of acetylene (ethyne, C(2)H(2)), ethylene (ethene, C(2)H(4)), and acetone (propanone, CH(3)COCH(3))

99 Activated dissociation resulting in loss of ethene, C(2)H(4), corresponds to the primary and lowest

100 diation, this study demonstrates how CSIA of ethene can be used to reduce uncertainty and risk at a s

101 Chlorinated ethenes (CEs) are ubiquitous groundwater contaminants, y

102 toring of natural attenuation of chlorinated ethenes (CEs) in contaminated soil and groundwater.

103 Chlorinated ethenes (CEs) such as perchloroethylene, trichloroethyle

104 The bis(ethene) complex [(Tp)Ir(C(2)H(4))(2)] (3) undergoes reac

105 Stilbenes are diphenyl ethene compounds produced naturally in a wide variety of

106 Chlorinated ethene concentrations and Geobacter 16S rRNA gene copy n

107 ation provided a good fit to the chlorinated ethene concentrations measured in a coculture of Dehaloc

108 ch as organic azides results in extrusion of ethene concomitant with formation of a mononuclear titan

109 In this report we describe sulfate dependent ethene consumption in microcosms prepared with sediments

110 95 groundwater samples across 6 chlorinated ethene-contaminated sites and searched for relationships

111 of indoor and outdoor air were analyzed for ethene content, and measurements were made of mixing rat

112 ns are earlier than the TSs of the butadiene-ethene cycloaddition.

113 sm depending on the nature of the substrate (ethene, cyclohexene, or diethyl 2-benzylidenesuccinate)

114 ulated with the tetrachloroethene- (PCE-) to-ethene-dechlorinating bacterial consortium BDI-SZ contai

115 In the absence of VC, ethene degraded faster when methane was also present.

116 pe = 1,1,2,2-tetrakis(4-(pyridin-4-yl)phenyl)ethene, DMA = dimethylacetamide) crystallizes in a new s

117 olvents, namely, the 1,2-dihalo-ethanes and -ethenes (DXEs).

118 e, which initiates attack on the chlorinated ethene, enhanced the degradation of cis-dichloroethylene

119 hlorination products vinyl chloride (VC) and ethene (ETH) well.

120 These ethene/ethane selectivities are 13 times higher than tho

121 those reported for known solid sorbents for ethene/ethane separation.

122 ,6'-dimethyl-2,2'-bipyridine)][OTf] (2) show ethene/ethane sorption selectivities of 390 and 340, res

123 tes such as ethyne/ethynyl (C(2)H(2)/C(2)H), ethene/ethenyl (C(2)H(4)/C(2)H(3)), and methane/methyl (

124 for efficient trapping of the test compounds ethene (ethylene) and ethyne (acetylene).

125 ectron oxidation of the 1,2-bis(triarylamine)ethene fragment also results in electronic changes to th

126 d activation propensities for elimination of ethene from TEP is examined.

127 chloride production and dechlorination, and ethene generation were all inhibited at these PFAA conce

128 ent enzyme activity in extracts from VC- and ethene-grown cells.

129 = 4,4'-bipyridine; bpy-2 = 1,2-bis(4-pyridyl)ethene) has been studied to assess its selectivity towar

130 controlled by the C(2)H(4)/H(2) ratio during ethene hydrogenation at 353 K.

131 respectively, and compared as catalysts for ethene hydrogenation at atmospheric pressure and tempera

132 The rate of ethene hydrogenation on Ir(4) is typically several times

133 Simple test reactions as ethene hydrogenation, 2-butene cis-trans isomerization a

134 ewis pair facilitates the coupling of CO and ethene in a new way.

135 ors associated with microbial degradation of ethene in anaerobic microcosms (epsilon = -6.7 per thous

136 orination of chlorinated ethenes to nontoxic ethene in contaminated aquifers.

137 pathways were studied, and the importance of ethene in the destruction of THF by LiDBB was observed.

138 or ability of sigma bonds in monosubstituted ethenes in a complex way.

139 tent chlorine isotope effects of chlorinated ethenes in all aqueous OS-SET experiments contrast stron

140 d here accounts for transport of chlorinated ethenes in flowing groundwater, mass transfer of chlorin

141 sful reductive dechlorination of chlorinated ethenes in groundwater under different flow conditions.

142 n high-frequency measurements of chlorinated ethenes in oak (Quercus rubra) and baldcypress (Taxodium

143 Ba for the intermolecular hydroamination of ethene indicated that the efficiency of the catalysis is

144 eriments by other workers indicates that the ethene initiator does not significantly modify the cours

145 We demonstrate that ethene is also formed and can be subsequently oxidized.

146 Microbial degradation of ethene is commonly observed in aerobic systems but fewer

147 Ethene is considered recalcitrant under anaerobic condit

148 Free ethene is detected in the NMR spectrum of the products,

149 Although ethene is epoxidized efficiently using molecular oxygen

150 ed to determine whether biotransformation of ethene is occurring in addition to biodegradation of the

151 nthroline and dppene = bis(diphenylphosphino)ethene) is reported in mixed CH3CN/H2O (50:50 v/v) and a

152 nt in a similar way to the polymerization of ethene, leading to low-molecular-weight polymer, while T

153 Novel molecular units are described, such as ethene-like C2O4(4-) in C2/m Li2(CO2), finite C4O8(6-) c

154 (4))] (M = Co or Ni; bpe = 1,2-bis(4-pyridyl)ethene; M' = Mo or Cr) has been synthesized and evaluate

155 Ethene mass balance can be used as a direct indicator to

156 Di-sigma-bonded ethene and pi-bonded ethene on the clusters were identified by IR spectroscop

157 yl)ethene-OTBS (1Z) and (E)-1,2-bis(biphenyl)ethene-OTBS (1E), where ruthenium sensitization occurred

158 r untethered analogues, (Z)-1,2-bis(biphenyl)ethene-OTBS (1Z) and (E)-1,2-bis(biphenyl)ethene-OTBS (1

159 contaminated groundwater sites may be due to ethene oxidation, and suggest a unique phylotype is invo

160 erobic VC-dechlorinators, methanotrophs, and ethene-oxidizing bacteria (etheneotrophs) via metabolic

161 ermediates, with the former predominating at ethene partial pressures less than about 200 Torr and th

162 than about 200 Torr and the latter at higher ethene partial pressures.

163 and by implication most other highly active ethene polymerization catalysts, are strongly mass-trans

164 resence of AlBu(i)(3) gives extremely active ethene polymerization catalysts.

165 Conversion of [(14)C]ethene primarily to (14)CO2 was demonstrated in fifth an

166 reductive cyclization of 1,1-bis(2-nitroaryl)ethenes, producing indolo[2,3-b]indoles and indolo[2,3-c

167 ion-was observed in most wells; in addition, ethene production increased significantly in monitoring

168 alogenase)-carrying Dehalococcoides, whereas ethene production was only moderate.

169 thane could be simultaneously transformed to ethene, prolonged exposure to 1,2-dichloroethane diminis

170 thermodynamics of bound species derived from ethene, propene, n-butene, and isobutene on solid acids

171 pathways that build up a polymer chain from ethene/propene and functionalised polar vinyl monomers.

172 e-catalyzed oxidation of various halogenated ethenes, propenes, butenes and nonhalogenated cis-2-pent

173 ass balance may reflect biotransformation of ethene rather than incomplete dechlorination.

174 al of hydrogen isotope ratios of chlorinated ethenes remains untapped.

175 Total chlorinated ethene removal was 87% in the CYP2E1 bed, 85% in the WT

176 decrease in the Ir-Ir coordination number in ethene-rich feed.

177 When the feed composition was cycled from ethene-rich to H(2)-rich, the predominant species in the

178 ation of the reaction products (DCE, VC, and ethene) showed a major preference for the (1)H isotope.

179 nd seemed to reduce access of (1)O(2) to the ethene site, which attenuated the total quenching rate c

180 hanced the cleavage efficiency by 15% at the ethene site.

181 ds found in Norway spruce bark with a diaryl-ethene skeleton with known antifungal properties.

182 390 and 340, respectively, and corresponding ethene sorption capacities of 2.38 and 2.18 mmol g(-1) w

183 For 2, ethene sorption reached 90 % of equilibrium capacity wit

184 The rates of ethene sorption were also measured.

185 [2 + 2] addition of singlet oxygen with the ethene spacer and scission of a dioxetane intermediate.

186 of sulfide in other cultures, confirming the ethene/sulfate couple.

187 kenes, exemplified by tetrakis(dimethylamino)ethene, TDAE, and on additional driving force associated

188 y increased over time with the rate of total ethene (TE) release from the Mg(OH)2+EVO+BC column reach

189 Using bis(dithiazole)ethene that can be photoswitched between its ring-open a

190 yclohexene oxide, and the oligomerization of ethene to a low molecular weight, highly branched produc

191 otrophs utilize only methane but can oxidize ethene to epoxyethane and VC to chlorooxirane.

192 hypothesized that methanotroph oxidation of ethene to epoxyethane competed with their use of methane

193 trated that Carver methanotrophs can oxidize ethene to epoxyethane, and that starved Carver etheneotr

194 he catalyst selectivity in the conversion of ethene to n-butene or ethane, respectively, as a result

195 by potassium, induced clean deprotonation of ethene to yield a stable product.

196 for reductive dechlorination of chlorinated ethenes to nontoxic ethene in contaminated aquifers.

197 Enhanced dechlorination of chlorinated ethenes to nontoxic ethene was observed long after the e

198 nes, trans- and cis-1,2 di(2-(5-phenylfuryl))ethene (trans-1 and cis-2), in 62% and 23% yields, respe

199 When 1 is reacted with excess ethene under mild conditions, a new organic product, 1,4

200 aining [Ru(bpy)(3)](2+) and 1,2-bis(biphenyl)ethene units covalently linked together by an ether teth

201 s exhibit significantly reduced lag time for ethene utilization when epoxyethane is added.

202 for microbial dehalogenation of chlorinated ethenes vary considerably we studied the potential effec

203 Bioremediation of chlorinated ethenes via anaerobic reductive dechlorination relies up

204 A first dose of 0.6 mmol/L ethene was consumed within 77 days, and a second dose wa

205 The cycloaddition of cyclopentyne with ethene was examined using (U)B3LYP and CASSCF methods to

206 of theory, the reaction of permanganate with ethene was found to have a very early transition state,

207 Dechlorination to ethene was maintained following repeated transfers at pH

208 orination of chlorinated ethenes to nontoxic ethene was observed long after the expected nZVI oxidati

209 Ethene was oxidized by ethenotrophs that can degrade VC

210 the selective hydrogenation of acetylene to ethene was performed under flow conditions on the SAA NP

211 llowing repeated transfers at pH 7.2, but no ethene was produced at pH 5.5, and only the transfer cul

212 ated activation energy for the reaction with ethene was reasonable, the calculated effect of substitu

213 rsisted, and near-complete dechlorination to ethene was stably maintained.

214 lete dechlorination of cis-dichloroethene to ethene was sustained at high flow velocity (0.51 m/d), b

215 ly, competitive inhibition among chlorinated ethenes was examined and then added to the model.

216 hibition of dehalorespiration by chlorinated ethenes was previously observed in cultures containing D

217 rium that dechlorinates tetrachloroethene to ethene, was isolated and characterized.

218 Four doses of ethene were consumed at increasing rates, and the cultur

219 eductive cyclizations of 1,2-bis(2-nitroaryl)ethenes were nonselective, affording mixtures of monocyc

220 ergy in groups is changed in monosubstituted ethenes where the role of electronegativity of the subst

221 mixtures and shown to be 100% in the case of ethene, whereas some ethyne is retained under the curren

222 ) are best used for treatment of chlorinated ethenes, whereas gaseous co-metabolic substrate (methane

223 s-DCE, trans-DCE, and vinyl chloride (VC) to ethene, while strain 11a5 dechlorinates TCE and all thre

224 The method, by employing a tetra-substituted ethene with novel morphology-dependent fluorescence, whi

225 Vinyl chloride reduction to ethene would be initiated when Cob(I)alamin transfers an

226 ne (DMPE) and (Z)-1,2-bis(dimethylphosphino) ethene (ZDMP), and two chiral bidentate phosphine ligand