ライフサイエンスコーパス: decarbonylation

1 ransformations of amides via metal insertion/decarbonylation.

2 trategies to circumvent competitive aldehyde decarbonylation.

3 ich are followed by sequential reduction and decarbonylation.

4 h this catalyst showed extensive undesirable decarbonylation.

5 palladium-catalyzed O-arylation, and C3,C3'-decarbonylation.

6 f dibenzo[b,d]thiophene (11), from competing decarbonylation.

7 ur at the high temperatures required for the decarbonylation.

8 dies provide insight on parameters affecting decarbonylation, a side reaction that limits the turnove

9 e 9 during desilylation through autoxidative decarbonylation afforded benzophenone 2b, designated hyd

10 Oxidative decarbonylation also afforded the new tetracyanide [Fe2(

11 A KIE of 1.0 was determined for the decarbonylation and 1.42 for the overall reaction.

12 involvement of the KCS1 synthase in both the decarbonylation and acyl-reduction wax synthesis pathway

13 rough C-C activation of isatins, followed by decarbonylation and alkyne insertion.

14 mer complex results from substrate-dependent decarbonylation and constitutes a major limitation for t

15 A mechanism involving decarbonylation and Ni-C bond homolysis of a Ni(II) addu

16 t and catalyst/substrate concentration, both decarbonylation and productive hydroacylation can be tun

17 to generate 4,4'-dimethoxy-dicumene 2OMe by decarbonylation and radical coupling.

18 of the cyclopropenone 1 results in efficient decarbonylation and the formation of the reactive enediy

19 rated, aromatization occurs with concomitant decarbonylation and therefore does not support dehydrati

20 (R(a),R,R)-SIPHOS-PE effectively suppresses decarbonylation, and helps favor a turnover-limiting ins

21 by sequential Norrish type-I alpha-cleavage, decarbonylation, and radical-radical combination in a ti

22 that includes two Diels-Alder additions, two decarbonylations, and two dehydrogenations, giant biaryl

23 mitigating an undesired palladium-catalyzed decarbonylation-beta-elimination of the alpha-amino thio

24 hese reactants deoxygenate predominantly via decarbonylation (C-C cleavage) instead of C-O hydrogenol

25 cleavage, hydrogen shift, carbonylation, and decarbonylation contributed to CBZ transformative reacti

26 Pt(100) generated more decarbonylation "cracking" product while Pt(111) had a h

27 ter acid-site:H-site ratio results in higher decarbonylation (DCO) selectivity during acetic acid hyd

28 oposed reaction mechanism, to understand why decarbonylation does not occur competitively, and to elu

29 have also calculated the dediazoniation and decarbonylation energetics for mono- and bis-o-trimethyl

30 with significant coverages of CO* formed in decarbonylation events.

31 emoval of the C(5) carboxyl group by radical decarbonylation gave deformylgeissoschizine (2) that was

32 However, the subsequent decarbonylation generates a very unstable tBu-Ni(II) int

33 ggests that photochemical alpha-cleavage and decarbonylation in crystals should be predictable from k

34 While the quantum yields of decarbonylation in solution vary from Phi = 0.0 to 1.0,

35 uggesting that there is also a mechanism for decarbonylation induced by endothelin-1.

36 We propose that aldehyde decarbonylation is avoided by the use of an anionic dire

37 The stereochemistry of decarbonylation is thus disrotatory, in accord with prio

38 and aldehyde, which via hydrogen abstraction-decarbonylation-ISC recloses to give indan.

39 infrared photolysis/thermolysis to initiate decarbonylation, it was shown that the initial products

40 ls and by in situ catalytic hydrogenation or decarbonylation lead to three distinct groups of aromati

41 The reaction proceeds without decarbonylation, leads to trans olefins exclusively, and

42 Insights into the oxidative decarbonylation mechanism of these syntheses come from t

43 tive signaling to regulate carbonylation and decarbonylation mechanisms.

44 drogen atom abstraction and deformylation or decarbonylation occur in a nonsynchronous, coordinated m

45 acidic media, and in the presence of a base, decarbonylation occurs on one barbituric acid while the

46 e initial association of AsCO(-) to Ter2 Sn, decarbonylation occurs to give an anion featuring monoco

47 ach case, FVT above 600 degrees C results in decarbonylation of 1 and Wolff rearrangement to fulven-6

48 Photolytic decarbonylation of 1 results in the incorporation of the

49 Photoinduced decarbonylation of 2,4-bis(spirocyclohexyl)-1,3-cyclobut

50 HF/3-21G) activation energies (E(a)) for the decarbonylation of 3 were quite high: 39 and 46 kcal/mol

51 allowed pathways for the thermal cheletropic decarbonylation of 3-cyclopentenone.

52 shown that the initial products from thermal decarbonylation of 4 are solely carbon monoxide and ster

53 latter delta-lactam is obtained via a direct decarbonylation of a bicyclic lactam lactol.

54 3))(3)COO(*), which was in turn generated by decarbonylation of acyl radicals and oxygenation of tert

55 uration observed during the rhodium-promoted decarbonylation of aldehydes 18 and 19.

56 e-determining phosphine dissociation for the decarbonylation of aldehydes.

57 The stereochemistry of decarbonylation of an unconstrained derivative (trans,tr

58 e first systematic study of nickel-catalyzed decarbonylation of aromatic aldehydes under relatively m

59 The photochemical decarbonylation of diphenylcyclopropenone (DPCP) to diph

60 lic-catalyzed photocatalytic dehydrogenative decarbonylation of primary alcohols into alkanes, CO, an

61 the iridium-BINAP catalyzed dehydrogenative decarbonylation of primary alcohols with the liberation

62 The photochemical decarbonylation of several crystalline 1,3-acetonedicarb

63 tly from (R)-2 and indirectly from (R)-1 via decarbonylation of singlet chiral 1-naphthoxy/2-phenylpr

64 )-supported Ir(4) and Ir(6) were prepared by decarbonylation of tetra- and hexanuclear iridium carbon

65 mounts of carbon monoxide generated from the decarbonylation of the CO precursor, 9-methylfluorene-9-

66 aroylation of directing arenes proceeds via decarbonylation of the in situ generated phenyl glyoxal,

67 Values of the rate constant for decarbonylation of the initially formed arylacetyl radic

68 were formed instead of products arising from decarbonylation of the ketenes.

69 involving dehydrogenation of the alcohol and decarbonylation of the resulting aldehyde.

70 from these oxygenates as CO or CO(2) through decarbonylation or decarboxylation routes, respectively,

71 osition: the acyl elongation, reduction, and decarbonylation pathway that is active at the vegetative

72 Computational modeling of the decarbonylation pathway with partial phosphine dissociat

73 ess that occurs through a beta-H elimination/decarbonylation pathway.

74 roduct is required for wax formation via the decarbonylation pathway.

75 ile the Pd sites responsible for unselective decarbonylation pathways are selectively poisoned by CO.

76 control over competing aromatic labeling and decarbonylation pathways.

77 lular thioredoxin was upregulated during the decarbonylation phase.

78 = acetone, MeCN, [NCCH(2)BF(3)](-)) and the decarbonylation product [Rh((t)Bu(2)PCH(2)P(t)Bu(2))(CO)

79 eca-1(13),4,6,10,14,16-hexaen-12-one, 3, its decarbonylation product tricyclo[8.2.2.2(4,7)]hexadeca-1

80 ion from results in liquid alkane media that decarbonylation rates are independent of microviscosity.

81 The ratio of C-O hydrogenolysis to decarbonylation rates increased almost 100-fold as the I

82 ies of various reaction species along viable decarbonylation reaction coordinates for acids 5 and 7 w

83 a doubly enantiospecific Norrish type-I and decarbonylation reaction in solution and illustrates pot

84 A mechanism for this decarbonylation reaction is proposed.

85 ediate which then undergoes a stereospecific decarbonylation reaction mediated by Wilkinson's catalys

86 The quantum yield of the photochemical decarbonylation reaction ranges from 20% to 30% for alky

87 r are also presented, including an oxidation-decarbonylation reaction with primary alcohols.

88 ochemical analysis of the alpha-cleavage and decarbonylation reactions of acetone and several ketodie

89 can bind CO molecules, but only the reactive decarbonylation step creates vacancies that are also abl

90 the thermodynamics of the alpha-cleavage and decarbonylation steps.

91 ead of reductive elimination of aldehyde, or decarbonylation to give a trifluoroalkyl hydride, heatin

92 Stereospecific decarbonylation to products (R,R)-3b and (S,S)-3b, respe

93 Upon decarbonylation using amine oxides, these adducts react

94 he acyl C-O bond; second, it facilitates the decarbonylation, via the stabilization of a metallacycle

95 for which the free energy of activation for decarbonylation was a remarkable 33.5 kcal/mol.

96 Decarbonylation was suppressed by inhibition of thioredo

97 and Cu in a 3:1 ratio dramatically decreased decarbonylation, while preserving the high catalytic rat

98 iation and from the apical sites by reactive decarbonylation with the bulky reactant trimethylamine-N