KURZ, M. E.;REIF, L.;TANTRARAT, T., J. ORG. CHEM., 1983, 48, N 8, 1373-1375
作者:KURZ, M. E.、REIF, L.、TANTRARAT, T.
DOI:——
日期:——
US5057630A
申请人:——
公开号:US5057630A
公开(公告)日:1991-10-15
π-Allylic C1-Substitution in Water with Nitromethane Using Amphiphilic Resin-Supported Palladium Complexes
作者:Yasuhiro Uozumi、Toshimasa Suzuka
DOI:10.1021/jo061250m
日期:2006.10.1
palladium-catalyzed π-allylic substitution in water with amphiphilic PS−PEG resin-supported phosphine−palladium complexes. Catalyticasymmetric nitromethylation of cycloalkenyl esters was achieved in water as a single reaction medium under heterogeneous conditions using 5 mol % palladium of a PS-PEG resin-supported palladium−imidazoindolephosphine complex to give optically active (cycloalkenyl)nitromethanes
The osmylation of flexible 3-substituted cyclopentenes
作者:Giovanni Poli
DOI:10.1016/s0040-4039(00)70704-0
日期:1989.1
The osmylation of several 3-substituted cyclopentenes has been studied. A preference for OsO4 addition syn to an allylic CHR2 substituent is observed. By contrast, bulkier substituents of type CMeR2 give rise to a striking reversal of selectivity. These results are interpreted in terms of the stereodivergent nature of the two differently reactive envelope conformations.