作者:Fraser F. Fleming、Subrahmanyam Gudipati、Zhiyu Zhang、Wang Liu、Omar W. Steward
DOI:10.1021/jo0501184
日期:2005.5.1
Diastereoselectivealkylations of metalated conformationally locked 4-tert-butylcyclohexanecarbonitrile are highly diastereoselective with magnesium and copper counterions but only modestly diastereoselective with lithium as the counterion. Selective generation of diverse metalated nitriles is readily achieved through bromine−magnesium, −copper, and −lithium exchange reactions of the corresponding