Cyclobutane formation in the 2π + 2π cycloaddition of allyl and related cations to unactivated olefins. Evidence for the second step in the proposed mechanism of the ionic diels-alder reaction.
作者:Paul G. Gassman、Andrew C. Lottes
DOI:10.1016/0040-4039(92)88038-7
日期:1992.1
A variety of carbocation activated olefins have been shown to add to unactivated olefins in a 2π + 2π cycloaddition to yield cyclobutanes.
已显示出各种碳正离子活化的烯烃以2π+2π环加成的方式与未活化的烯烃加成,生成环丁烷。
2π + 4π Cycloadditions of carbocation activated allenes
作者:Paul G. Gassman、Andrew C. Lottes
DOI:10.1016/0040-4039(91)80196-d
日期:1991.11
Boron trifluoride etherate opening of an allenic acetal produced an allene which was strongly activated by the alpha-carbocation to undergo 2-pi + 4-pi cycloaddition reactions.
Synthesis of γ-Functionalized Cyclononanones: Hydroboration of 4-Oxygenated 1,2-Cyclononadienes with Disiamylborane
作者:F. Urbina、A. Guerrero、L. Cuéllar、R. Contreras
DOI:10.1055/s-1983-30240
日期:——
URBINA, E.;GUERRERO, A.;CUELLAR, L.;CONTRERAS, R., SYNTHESIS, BRD, 1983, N 2, 113-115
作者:URBINA, E.、GUERRERO, A.、CUELLAR, L.、CONTRERAS, R.