Stereocontrol in the EtAlCl<sub>2</sub>-Induced Cyclization of Chiral γ,δ-Unsaturated Methyl Ketones To Form Cyclopentanones
作者:Barry B. Snider、Mercedes Lobera、Tracy P. Marien
DOI:10.1021/jo034561v
日期:2003.8.1
EtAlCl(2)-induced cyclization of chiral gamma,delta-unsaturated ketones 11c and 17b takes place mainly from the expected face. The selectivity is modest for 11c (60:40) in which the large substituent is a primary alkyl group and the medium substituent is a methyl group and excellent for 17b (93:7) in which the large substituent is a cyclohexyl group and the medium substituent is a methyl group. The