Asymmetric 1,4-Reductions of Hindered β-Substituted Cycloalkenones Using Catalytic SEGPHOS−Ligated CuH
摘要:
The reagent combination of catalytic amounts of copper hydride ligated by a nonracemic SEGPHOS ligand leads in situ to an extremely reactive species capable of effecting asymmetric hydrosilylations of conjugated cyclic enones in very high ees. An unprecedented substrate-to-ligand ratio as high as 275 000:1 for this transformation has been documented.
CORBEL B.; DECESARE J. M.; DURST T., CAN. J. CHEM., 1978, 56, NO 4, 505-511
作者:CORBEL B.、 DECESARE J. M.、 DURST T.
DOI:——
日期:——
Asymmetric 1,4-Reductions of Hindered β-Substituted Cycloalkenones Using Catalytic SEGPHOS−Ligated CuH
作者:Bruce H. Lipshutz、Jeff M. Servesko、Tue B. Petersen、Patrick P. Papa、Andrew A. Lover
DOI:10.1021/ol0400185
日期:2004.4.1
The reagent combination of catalytic amounts of copper hydride ligated by a nonracemic SEGPHOS ligand leads in situ to an extremely reactive species capable of effecting asymmetric hydrosilylations of conjugated cyclic enones in very high ees. An unprecedented substrate-to-ligand ratio as high as 275 000:1 for this transformation has been documented.
Corbel,B. et al., Canadian Journal of Chemistry, 1978, vol. 56, p. 505 - 511