ROBERTSON, I. R.;SHARP, J. T., TETRAHEDRON, 1984, 40, N 16, 3095-3112
作者:ROBERTSON, I. R.、SHARP, J. T.
DOI:——
日期:——
A study of periselectivity in the thermal cyclisation reactions of diene-conjugated diazo compounds: 1,7-cyclisation as a route to 3H-1,2-diazepines and 1,5-cyclisation leading to new rearrangement reactions of 3H-pyrazoles
作者:Ian R. Robertson、John T. Sharp
DOI:10.1016/s0040-4020(01)82434-0
日期:1984.1
A range of diene-conjugated diazo compounds has been generated by the thermal decomposition of the sodium salts of the tosylhydrazones of 1-acyl-1, 3-dienes. Those of type (21) with a relationship of the diazo group and the γ, δ-double bond having a hydrogen atom at the diene terminus cyclised only by 1,7 ring closure to give 3-1,2-diazepines (23). This mode of cyclisation was inhibited by the presence