A new resolution procedure for the preparation of both (R)-(+)- and (S)-(-)-4-tert-butoxycyclopent-2-enone from racemic 4-tert-butoxycyclopent-2-enone and conversion of (R)-(+)-4-tert-butoxycyclopent-2-enone into (R)-(+)-4-acetoxycyclopent-2-enone. A new method for the determination of the enantiomeric purities of the resolved enones
A new resolution procedure for the preparation of both (R)-(+)- and (S)-(-)-4-tert-butoxycyclopent-2-enone from racemic 4-tert-butoxycyclopent-2-enone and conversion of (R)-(+)-4-tert-butoxycyclopent-2-enone into (R)-(+)-4-acetoxycyclopent-2-enone. A new method for the determination of the enantiomeric purities of the resolved enones
A simple route to (R)-(+)-4-t-butoxycyclopent-2-enone
作者:Bart M. Eschler、Richard K. Haynes、Steve Kremmydas、Damon D. Ridley
DOI:10.1039/c39880000137
日期:——
(–)-10-Mercaptoisoborneol undergoes conjugate addition to racemic 4-t-butoxycyclopent-2-enone in methanol in the presence of a catalytic amount of N,N,N′,N′-tetramethylethylenediamine to give a 1 : 1 mixture of the sulphide adducts, which with m-chloroperbenzoic acid in ether at – 70 °C is converted into a mixture of the corresponding sulphoxides; a single diastereoisomer of one of the sulphoxides