LARSEN, SCOTT D.;MARTINBOROUGH, ESTHER, TETRAHEDRON LETT., 30,(1989) N5, C. 4625-4628
作者:LARSEN, SCOTT D.、MARTINBOROUGH, ESTHER
DOI:——
日期:——
US5597816A
申请人:——
公开号:US5597816A
公开(公告)日:1997-01-28
Cycloaddition of β-substituted enones to a bicyclic sydnone: Observation of an unexpectedly facile hydrocarbon elimination
作者:Scott D. Larsen、Esther Martinborough
DOI:10.1016/s0040-4039(01)80759-0
日期:1989.1
Cycloaddition of β-alkyl- or β-arylenones to bicyclic sydnone 3 in the absence of added oxidant affords mixtures of the tetrahydropyrazolo[1,5-a]pyridines 4 and 5. The amount of 5 formed was dependent on the nature of R.