Cyclative cleavage via solid-phase supported stabilized sulfur ylides: synthesis of macrocyclic lactones
摘要:
A new synthesis of macrolactones bearing a cyclopropyl ring condensed to the macrocycle is reported via a cyclization-release strategy making use of solid-phase supported stabilized sulfur ylides. (C), 2002 Elsevier Science Ltd. All rights reserved.
Simultaneous reduction/oxidation sequence of hydroxy carbonyl substrates through Meerwein-Ponndorf-Verley reduction can be facilitated in the presence of bidentate aluminum catalyst, (2,7-dimethyl-1,8-biphenylenedioxy)bis(dimethylaluminum). This new approach provides the opportunity for efficient hydride transfer between two remotely situated functionalgroups.