CLARKE, SIMON J.;GILCHRIST, THOMAS L.;LEMOS, AMERICO;ROBERTS, TONY G., TETRAHEDRON., 47,(1991) N9, C. 5615-5624
作者:CLARKE, SIMON J.、GILCHRIST, THOMAS L.、LEMOS, AMERICO、ROBERTS, TONY G.
DOI:——
日期:——
Reactions of azoalkenes derived from hydrazones of ethyl bromopyruvate with electron rich alkenes and heterocycles
作者:Simon J. Clarke、Thomas L. Gilchrist、Américo Lemos、Tony G. Roberts
DOI:10.1016/s0040-4020(01)80992-3
日期:1991.7
Three hydrazones of ethyl bromopyruvate, the dinitrophenylhydrazone 2a, the toluene-4-sulphonylhydrazone 2b and the t-butoxycarbonylhydrazone 2c, have been reacted with a series of nucleophilic alkenes and heterocycles in the presence of sodium carbonate. Azoalkenes 3 are presumed as intermediates and adducts have been isolated. The azoalkenes derived from hydrazones 2a and 2c are found to be useful