Scheme 23. (A) Reaction of 44 with 4-[(Z)-2-pentenyl-3,4,4,5,5,5-d6]-cyclopentene or 4-[(Z)-2-pentenyl-3,4,4,5,5,5-d6]-cyclopentane. (B) Top: ESI(+)-MS spectra of the reaction of 44 with a cyclopentene derivative, with the detection of 44-d6. Bottom: ESI(+)-MS spectra of the reaction of 44 with a cyclopentane derivative, with no detection of 44-d6. Adapted from ref. 81. Copyright (2000) American Chemical Society.
