Unusual reagent control of diastereoselectivity in the 1,2-addition of hard carbon nucleophiles to C(6)-heteroatom substituted cyclohexenones.
Unusual reagent control of diastereoselectivity in the 1,2-addition of hard carbon nucleophiles to C(6)-heteroatom substituted cyclohexenones.
复制标题
硬碳亲核试剂与 C(6)-杂原子取代的环己烯酮 1,2-加成过程中非对映选择性的异常试剂控制。
DOI:
10.1021/ol016673j
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发表时间:
2001
期刊:
影响因子:
5.2
通讯作者:
McIntosh,MC
中科院分区:
文献类型:
--
作者:
Lindsay,HA;Salisbury,CL;Cordes,W;McIntosh,MC
A surprising and synthetically useful counterion-dependent reversal of diastereoselectivity was found in 1,2-additions of hard carbon nucleophiles to C6-heterosubstituted cyclohexenones. In general, Grignard reagents addedsynto the C6-substituent and Li reagents addedanti, although some exceptions were found. Selectivities could be increased in some cases by appropriate choice of solvent and/or cosolvent.