Kailan; Albert, Monatshefte fur Chemie, 1939, vol. 72, p. 169,170
作者:Kailan、Albert
DOI:——
日期:——
Palladium-catalyzed aryloxycarbonylation of terminal alkynes
作者:Kenji Itoh、Masahiro Miura、Masakatsu Nomura
DOI:10.1016/s0040-4039(00)79095-2
日期:1992.9
Carbonylation of terminal alkynes using palladium-phosphine complexes proceeds efficiently in the presence of 3- or 4-substituted phenols to give the corresponding 2-substituted 2-propenoic acid aryl esters in good selectivity and yield.
Aminolysis of Y-Substituted Phenyl X-Substituted Cinnamates and Benzoates: Effect of Modification of the Nonleaving Group from Benzoyl to Cinnamoyl
4-dinitrophenyl X-substituted cinnamates (1a, 1c, and 1e) with amines are curved with a decreasing βnuc value from 0.65 to 0.3−0.4. The reactions of Y-substituted phenyl cinnamates (3a−g) with morpholine also result in a curved Brønsted plot, while the corresponding reactions of Y-substituted phenyl benzoates (4a−e) exhibit a linear Brønsted plot. It has been concluded that the curved Brønsted plots found