Bellinger, Geoffrey C. A.; Campbell, William E.; Giles, Robin G. F., Journal of the Chemical Society. Perkin transactions I, 1982, # 12, p. 2819 - 2826
The chemistry of phthalide-3-carboxylic acid - I decarboxylation in the presence of aldehydes
作者:Rolf H. Prager、Carl H. Schiesser
DOI:10.1016/s0040-4020(01)91799-5
日期:1984.1
The decarboxylation of phthalide-3-carboxylic acid (3-oxo-l,3-dihydroisobenzofuran-1-carboxylic acid) has been studied in the melt, in dimethylsulfoxide, and in the presence of aromatic aldehydes. The latter are efficiently trapped to produce mixtures of 3-arylidene-phthalides and 3-(arylhydroxymethyl)phthalides. Kinetic and other evidence supports the proposal that this reaction occurs in a tight
A first photocatalytic cross-pinacol coupling was achieved. The reaction proceeded with a various combination of two aldehydes, two ketones, or an aldehyde and a ketone to afford the corresponding unsymmetric vicinal 1,2-diols in up to 91 % yield. In this process, an umpoled anionic carbinol synthon was generated in situ, by the assistance of CO2 additive, to react nucleophilically with a second electrophilic
首次实现了光催化交叉频哪醇偶联。该反应以两种醛、两种酮或醛和酮的各种组合进行,以高达 91% 的产率提供相应的不对称邻位 1,2-二醇。在此过程中,在 CO 2添加剂的帮助下,原位生成了反极性的阴离子甲醇合成子,与第二个亲电子羰基化合物发生亲核反应。二氧化碳促进的光催化交叉频哪醇偶联(S. Okumura、Y. Uozumi 等)等)
BELLINGER, G. C. A.;CAMPBELL, W. E.;GILES, R. G. F.;TOBIAS, J. D., J. CHEM. SOC. PERKIN TRANS., 1982, N 12, 2819-2825
作者:BELLINGER, G. C. A.、CAMPBELL, W. E.、GILES, R. G. F.、TOBIAS, J. D.