Enantioselective route to .gamma.-butyrolactones: chiral auxiliary mediated amide alkylation and iodolactonization
摘要:
A number of chiral, gamma, delta-unsaturated amides (1 and 2) have been prepared and their subsequent alkylation and iodolactonization to gamma-butyrolactones (3) investigated.
Preparation of Nonracemic 3,5-Disubstituted-.gamma.-butyrolactones: An Effective Sequent Auxiliary for Amide Alkylation and Iodolactonization
作者:Hongsik Moon、Shawn W. E. Eisenberg、Mark E. Wilson、Neil E. Schore、Mark J. Kurth
DOI:10.1021/jo00101a002
日期:1994.11
The effective dual use of a chiral auxiliary in two sequential steps is reported; this sequent auxiliary mediates diastereoselective C-C bond formation in the first step and mediates diastereoselective heterocyclization in the second step.
Chakraborty, Tushar K.; Thippeswamy, Devasamudram; Jayaprakash, Sarva, Journal of the Indian Chemical Society, 1998, vol. 75, # 10-12, p. 741 - 745