Steric control of oxidation selectivity in macrocyclic phosphine oxide-dithioethers
摘要:
Macrocyclic phosphine oxide-disulfoxides 1a-e and 2a-e were synthesized by oxidation of the corresponding dithioethers with m-CPBA. Four stereoisomers are possible, but a single stereoisomer was isolated as the major product in each case. This paper describes the structural characterization of several trioxides as well as studies designed to determine the origin of oxidation selectivity. (C) 1997 Elsevier Science Ltd.