ライフサイエンスコーパス: trifluoroacetic acid

1 h formaldehyde catalyzed by a Bronsted acid (trifluoroacetic acid).

2 oxycarbonyl, cod = 1,5-cyclooctadiene, TFA = trifluoroacetic acid).

3 Denatured AChE was eluted with 1% trifluoroacetic acid.

4 could be cleaved from the solid support with trifluoroacetic acid.

5 onizing solvents such as trifluoroethanol or trifluoroacetic acid.

6 nthesized and subsequently deprotected using trifluoroacetic acid.

7 One of them is 0.5% n-octyl glucoside/0.5% trifluoroacetic acid.

8 F, and trifluoroethyl alcohol-BF3 but not in trifluoroacetic acid.

9 ve 7 and 12a/12b, which were dehydrated with trifluoroacetic acid.

10 m for cytochrome c in buffer containing 0.1% trifluoroacetic acid.

11 ular dichroism (CD) to be 38% helical in 30% trifluoroacetic acid.

12 talysts for H2 production in the presence of trifluoroacetic acid.

13 o give unsymmetrical diaryl chalcogenides in trifluoroacetic acid.

14 ydroxyaryl)-1,4-quinones upon treatment with trifluoroacetic acid.

15 or at room temperature that was catalyzed by trifluoroacetic acid.

16 of diaryl dichalcogenide with persulfate in trifluoroacetic acid.

17 le as porogen with traces of acetic acid and trifluoroacetic acid.

18 d in situ from potassium hydrodifluoride and trifluoroacetic acid.

19 Z configuration (Z-H(+)) by the addition of trifluoroacetic acid.

20 the Z-H(+) configuration upon treatment with trifluoroacetic acid.

21 electrocatalyst for hydrogen evolution from trifluoroacetic acid.

22 n 500-fold enhancement upon protonation with trifluoroacetic acid.

23 water/acetonitrile gradient containing 0.1% trifluoroacetic acid.

24 nt coupling of primary amines, aldehydes and trifluoroacetic acid.

25 28% (v/v) acetonitrile in 0.1% (v/v) aqueous trifluoroacetic acid.

26 mobile phase consisting of acetonitrile and trifluoroacetic acid 0.025% (w/v).

27 Treatment of 29 with trifluoroacetic acid afforded the tetracyclic lactam ske

28 -dibromodimethylhydantoin in the presence of trifluoroacetic acid afforded the titled compound, which

29 ione (MeTAD) with anisole in the presence of trifluoroacetic acid affords unexpected disubstituted ur

30 Treatment of purified oximes with aqueous trifluoroacetic acid and acetone effected trans-oximatio

31 d by biomimetic oxidative dimerization using trifluoroacetic acid and air yielding a 1:2 P/M mixture

32 asma concentrations and urinary excretion of trifluoroacetic acid and bromide, indicative of oxidativ

33 The samples were precipitated with trifluoroacetic acid and centrifuged.

34 The combined use of trifluoroacetic acid and HCl during the synthesis result

35 a scalable trifluoromethylation methodology, trifluoroacetic acid and its anhydride represent an attr

36 hyl acetal or paraldehyde in the presence of trifluoroacetic acid and pyridine or PPTS.

37 e enzyme subunits were dissociated in dilute trifluoroacetic acid and then renatured at pH 7.8 and se

38 Studies in a mixture of trifluoroacetic acid and trifluoromethanesulfonic acid s

39 Stoichiometric quantities of trifluoroacetic acid and trimethoxybenzene are used as t

40 Different ion pairing reagents like TFA (trifluoroacetic acid) and HFBA (heptafluorobutyric acid)

41 adient consisting of solvent A (0.1% aqueous trifluoroacetic acid) and solvent B (100% acetonitrile)

42 ypentadienals with a chiral secondary amine, trifluoroacetic acid, and a diene resulted in the format

43 ylamine or with trityl alcohol and catalytic trifluoroacetic acid, and an efficient one-pot cyclo-gua

44 stablishes that acid additives (oxalic acid, trifluoroacetic acid, and particularly hydrochloric acid

45 atalyzed hydroarylation of cinnamic acids in trifluoroacetic acid are erroneous.

46 A C-18 reversed-phase column, acetonitrile-trifluoroacetic acid as a mobile phase, coupled with UV

47 lusion of either moisture or oxygen, and use trifluoroacetic acid as a stable and inexpensive fluorin

48 We used trifluoroacetic acid as additive in a CO(2)/methanol mob

49 ing a mixture of chloroform/methanol/aqueous trifluoroacetic acid as the mobile phase for size exclus

50 (250x4.6mm, 5microm) using acetonitrile/0.1% trifluoroacetic acid as the mobile phase.

51 NMR and IR spectroscopy and then exposed to trifluoroacetic acid as well as to several metal triflat

52 alkylethynyl) quinoxaline in the presence of trifluoroacetic acid at 65 degrees C has been described.

53 A protocol using trifluoroacetic acid at a temperature of 60 degrees C is

54 ion rates between water protons and (19)F of trifluoroacetic acid at concentrations ranging from 23 t

55 ponding perfluoroalkyl iodides with Oxone in trifluoroacetic acid at room temperature and subsequentl

56 The studied compounds are protonated by trifluoroacetic acid at the carbonyl oxygen, in spite of

57 Blood halothane and plasma and urine trifluoroacetic acid, bromide, and fluoride concentratio

58 In the presence of trifluoroacetic acid, C-protonated dications are generat

59 econdary reaction, as can be the case in the trifluoroacetic acid-catalyzed cleavage of amino acid am

60 Earlier, it was found that the trifluoroacetic acid-catalyzed condensation of 2 and 2 e

61 ipyrrane, and 16-selenatripyrrane under mild trifluoroacetic acid-catalyzed reaction conditions.

62 We find that analysis of acetonitrile/trifluoroacetic acid cellular extracts produces data sim

63 Treatment of [*I]Boc-SGMIB with trifluoroacetic acid delivered the final product.

64 ide (PVDF) membrane blots, hydrolyzed in 20% trifluoroacetic acid, derivatized, and analyzed by C-18

65 as deprotected (tert-butylhydrogen peroxide, trifluoroacetic acid-dichloromethane) to form mixtures o

66 eated patients cumulative 96 h postoperative trifluoroacetic acid excretion was 12,900 (SE 1700) and

67 corporates a protein precipitation step with trifluoroacetic acid followed by addition of dichloromet

68 Recrystallization with trifluoroacetic acid following matrix deposition in MALD

69 of 6 with triethylsilane in the presence of trifluoroacetic acid furnished the tetraacetylenic hydro

70 Addition of trifluoroacetic acid gave a C-protonated monocation, and

71 Treatment of 1 with trifluoroacetic acid generates the unstable 2,3-diamino-

72 hydroxy derivatives with PCl3 in sulfuric or trifluoroacetic acid give mono- as well as didichloropho

73 easily removed under acidic conditions with trifluoroacetic acid giving the N-phosphonooxymethyl pro

74 e, the concentration of ion-pairing reagent (trifluoroacetic acid) had the strongest impact on the re

75 itrocellulose membrane, dissolved in acetone/trifluoroacetic acid/hexafluoroisopropanol/sinapinic aci

76 Couples, like HMDS and trifluoroacetic acid, HMDS and pentafluoropropionic acid

77 Trifluoroacetic acid (HOAcF) reversibly associates with

78 b was effected by tri-n-butyltin hydride and trifluoroacetic acid in a completely stereoselective man

79 ol % of 3,5-dichloropyridine, and 5 mol % of trifluoroacetic acid in acetic acid at 110 degrees C, va

80 For example, reaction of sulfoxide 27 with trifluoroacetic acid in chloroform provides, among other

81 1]heptyl trifluoroacetate readily eliminates trifluoroacetic acid in DMSO-d(6) via a cationic mechani

82 The samples were extracted with 25% trifluoroacetic acid in ethanol.

83 o-4-hydroxycinnamic acid in methanol and 10% trifluoroacetic acid in water are added to the peptide-c

84 These aggregates can be dissociated by trifluoroacetic acid into monomers which migrate as 10-k

85 The (1)H NMR spectrum of the gamma-picoline/trifluoroacetic acid ion pair shows a signal at delta =

86 The presence of trifluoroacetic acid is crucial for this catalytic react

87 1-Methyl-2-pyrrolidone (NMP) seeded with 5% trifluoroacetic acid is identified as a singular buffer,

88 bulk antigenic formats (freeze-thaw lysate, trifluoroacetic acid lysate, extracted membranes, affini

89 Ion pairing with trifluoroacetic acid may reduce overload, while the effe

90 Trifluoroacetic acid mediates the hydroarylation of alke

91 Additional equilibrium measurements in trifluoroacetic acid, methylene chloride, and ethyl acet

92 In the intermolecular selectivity studies, trifluoroacetic acid, Mg(ClO4)2, and LiClO4 have been em

93 elution (92% H2O, 8% acetonitrile, and 0.1% trifluoroacetic acid) of an ODS II Spherisorb column, wi

94 inone diimines, followed by cyclization with trifluoroacetic acid or 1,3-dicyclohexylcarbodiimide (DC

95 on protonation of the carbonyl function with trifluoroacetic acid or alkylation with triethyloxonium

96 tigated upon addition of either an excess of trifluoroacetic acid or an excess of selected metal (Mg(

97 The reaction utilizes trifluoroacetic acid or boron trifluoride as promoters.

98 tive aldehydes or ketones in the presence of trifluoroacetic acid or boron trifluoride etherate.

99 tions at different pH and in the presence of trifluoroacetic acid or hydrochloric acid.

100 Using either trifluoroacetic acid or silica-bound toluenesulfonic aci

101 ution with a mobile phase consisting of 0.1% trifluoroacetic acid (pH=1), acetonitrile and methanol a

102 of NMP as the main solvent and cleavage with trifluoroacetic acid, phenol, ethanedithiol, thioanisole

103 nsists of enzymatic reaction, quenching with trifluoroacetic acid, precipitation of the protein by ce

104 The substantial attenuation of trifluoroacetic acid production by disulfiram after halo

105 Trifluoroacetic acid promoted unprecedented domino react

106 In the presence of trifluoroacetic acid, proton reduction catalysis coincid

107 Acid cleavage with 10% trifluoroacetic acid provides the pure unsymmetrically s

108 When the condensation is catalyzed with trifluoroacetic acid, rather than boron trifluoride, the

109 idic mobile-phase additives (e.g., formic or trifluoroacetic acid), reduce its use.

110 a thioimide that, on treatment with aqueous trifluoroacetic acid, releases the peptide from the resi

111 mixture, to corresponding alcohol esters in trifluoroacetic acid solvent.

112 1-min bead beating cycles in an acetonitrile/trifluoroacetic acid solvent.

113 lent iodine(III) complex in non-superacidic (trifluoroacetic acid) solvent.

114 The oxidation of cyclohexane by the H2O2-trifluoroacetic acid system is revisited.

115 particles, eluted with a water/acetonitrile/trifluoroacetic acid (TFA) (68/32/0.1, v/v/v) solution.

116 he mixture of 1-butanesulfonic acid (BA) and trifluoroacetic acid (TFA) as the mixed ion-pairing reag

117 Addition of trifluoroacetic acid (TFA) eliminated the induction peri

118 ed aziridines, arynes, and water promoted by trifluoroacetic acid (TFA) has been reported.

119 rile (0.1 M Bu(4)NPF(6)) solution containing trifluoroacetic acid (TFA) has been studied by transient

120 zinc, as low as 10 mol %, in the presence of trifluoroacetic acid (TFA) initiate the radical addition

121 , urea, guanidine hydrochloride (GuHCl), and trifluoroacetic acid (TFA) on rhodopsin's secondary stru

122 time-resolved kinetic study on the effect of trifluoroacetic acid (TFA) on the hydrogen atom transfer

123 hydrazinolysis with solutions of either 0.1% trifluoroacetic acid (TFA) or low-molarity (100, 50, 20,

124 oxidation of trichloroacetic acid (TCA) and trifluoroacetic acid (TFA) resulted in lower recovery co

125 Release of the peptides on hydrolysis with trifluoroacetic acid (TFA) results in peptides that have

126 In addition, the acid modifier trifluoroacetic acid (TFA) was found to improve the AP-I

127 rate coefficients for gas-phase reaction of trifluoroacetic acid (TFA) with two Criegee intermediate

128 In dichloromethane or trifluoroacetic acid (TFA), the reaction between 1 and e

129 C CPMAS and (19)F MAS) NMR using ethanol and trifluoroacetic acid (TFA)-modified n-hexane as the mobi

130 conformational change upon protonation with trifluoroacetic acid (TFA).

131 nucleophilic attack but readily removed with trifluoroacetic acid (TFA).

132 s a complete reversibility after addition of trifluoroacetic acid (TFA).

133 ol-gels at pH 4.0 and eluted at pH 1.0 using trifluoroacetic acid (TFA).

134 ost completely transformed to the persistent trifluoroacetic acid (TFA).

135 4-anilinoquinazoline-2-carbonitriles in neat trifluoroacetic acid (TFA); (2) a Pd(OAc)2 (10 mol %) or

136 (1) with trifluoroperacetic acid (TFPAA) in trifluoroacetic acid (TFAA) proceeds with the formation

137 pendant carboxylate group was removed using trifluoroacetic acid to afford poly(3,4-dihydroxybutyric

138 ed with a dipyrrylmethane in the presence of trifluoroacetic acid to give the 22-oxa-21-carbaporphyri

139 es 8a,b, which were deprotected with aqueous trifluoroacetic acid to give the Z-enynes 9a,b.

140 ps: hydrolysis of the glycoprotein in 6.75 M trifluoroacetic acid to release mannose 6-phosphate and

141 The addition of trifluoroacetic acid to the ROMP reaction substantially

142 Titration studies using trifluoroacetic acid tracked changes in the electronic s

143 Both trifluoroacetic acid-trapped I-1 and I-2, after isolatio

144 In-gel MAAH using 25% trifluoroacetic acid was developed and optimized for deg

145 Removal of the N-BOC group by trifluoroacetic acid was followed by sequential coupling

146 eprotected with HCl/AcOH to provide 1, while trifluoroacetic acid was required to deprotect 2e and af

147 Photoexcitation of 2 in the presence of trifluoroacetic acid was shown to generate H(2).

148 Finally, extraction with 0.1% trifluoroacetic acid was used to selectively precipitate

149 s of 3 under mild acidic conditions, such as trifluoroacetic acid/water mixtures at room temperature.

150 native insulin on reverse-phase HPLC, using trifluoroacetic acid/water/acetonitrile gradients.

151 rotection of the peptide were carried out in trifluoroacetic acid which also generated unprotected me

152 Replacing trifluoroacetic acid with a catalytic amount of Lewis ac

153 UV-vis spectra in the presence of trifluoroacetic acid with an applied potential confirmed

154 9-90% and ketones using catalytic amounts of trifluoroacetic acid yielding 25-83%.