N-Unsubstituted hydrazones of somearomaticketones and aldehydes were found to react with lead tetraacetate giving the corresponding diazo compounds as primary reaction products, and the derived 1-monoacetoxy- and 1,1-diacetoxy-1-arylalkanes, as well as azines, as final products. The yields obtained depend on the stability of the diazo compound initially formed and on the experimental conditions employed
Catalytic decomposition of diazo compounds by metal salts
作者:T. Shirafuji、Y. Yamamoto、H. Nozaki
DOI:10.1016/s0040-4020(01)91700-4
日期:——
in aq DMF catalyse thermal decomposition of diphenyldiazomethane 1 to afford benzopinacol dicarboxylates 2 in favourable yields. Chelate salts of CuII carboxylates such as salicylate, glycinate or tartrate accelerate thermolysis of 1 affording not 2 but tetraphenylethylene and beneophenone azine. These products are explained by assuming a copper carbenoid. The decomposition of 1 is catalysed also by
Stephanidou-Stephanatou, J.; Lefkopoulou, S., Journal of Heterocyclic Chemistry, 1982, vol. 19, p. 705 - 711
作者:Stephanidou-Stephanatou, J.、Lefkopoulou, S.
DOI:——
日期:——
Oxidations with lead tetraacetate. II. .DELTA.3-1,3,4-Oxadiazolines from oxocarbohydrazones and a .DELTA.3-1,3,4-thiadiazoline from acetone thiocarbohydrazone
作者:P. R. West、J. Warkentin
DOI:10.1021/jo01269a083
日期:1968.5
STEPHANIDOU-STEPHANATOU, J.;LEFKOPOULOU, S., J. HETEROCYCL. CHEM., 1982, 19, N 4, 705-711