Iodolactonization: Synthesis, Stereocontrol, and Compatibility Studies
作者:Martins S. Oderinde、Howard N. Hunter、Stacy W. Bremner、Michael G. Organ
DOI:10.1002/ejoc.201101343
日期:2012.1
Generalized iodolactonization conditions have been developed for the formation of both cis- and trans-γ-lactones from 3-pentenoic acid derivatives containing various protected alcohol moieties. Kinetic control of the reaction using iodine and base at 0 °C for 6 h provided the cis-lactone with good selectivity (75:25), and thermodynamic control at room temperature for 24 h provided the trans-lactone