公开了用 Cu(NO 3 ) 2和 KI 以区域选择性和立体选择性方式对乙烯基环丙烷进行直接硝化,以有效地得到硝基烯烃,其中保留了环丙烷骨架。给定的方法可以扩展到其他乙烯基环以及具有广泛底物范围、良好功能耐受性和高效合成模块化的生物分子衍生物。进一步的转化表明所获得的产品是有机合成中的通用构建块。所提出的离子途径可以解释未接触的小环和反应过程中 KI 的影响。
Substitution of P(O)Ph2, SOPh and SO2Ph on an allene facilitates intramolecular radical addition to the central allene carbon to provide good yields of five-, six-, and seven-membered carbocycles.
Vollhardt, Juergen; Gais, Hans-Joachim; Lukas, Karl L., Angewandte Chemie, 1985, vol. 97, # 7, p. 607 - 609
作者:Vollhardt, Juergen、Gais, Hans-Joachim、Lukas, Karl L.
DOI:——
日期:——
Geminal alkylation: substitutions of allyl sulfones. Regiocontrol via molybdenum catalysis
作者:Barry M. Trost、Craig A. Merlic
DOI:10.1021/jo00291a001
日期:1990.2
Regioselective cyclopropanation of 2-phenylsulfonyl 1,3-dienes
作者:Jan-E. Bäckvall、Claes Löfström、Seppo K. Juntunen、Matthew Mattson
DOI:10.1016/s0040-4039(00)91988-9
日期:1993.3
Regioselective cyclopropanation of 2-phenylsulfonyl 1,3-dienes at either double bond was achieved by employing two different reagents. Sulfur ylide 1 resulted in a regiospecific cyclopropanation at the electron deficient double bond whereas an iron carbene, thermally generated from 5a, gave cyclopropanation exclusively at the electron rich double bond.
TROST, BARRY M.;MERLIC, CRAIG A., J. ORG. CHEM., 55,(1990) N, C. 1127-1129
作者:TROST, BARRY M.、MERLIC, CRAIG A.
DOI:——
日期:——
VOLLHARDT, J.;GAIS, H. -J.;LUKAS, K. L., ANGEW. CHEM., 1985, 97, N 7, 607-609