1995 Volume 43 Issue 4 Pages 708-710
Cyclopropane ring of 2- and 2, 3-substituted cyclopropanecarboxylates (1) was regioselectively cleaved using SmI2-HMPA-THF system in the presence of tert-BuOH to give 4- and 3, 4-substituted butyrates (2) in moderate to good yields.