Sequence control on the ring-opening oligomerization of cyclic imino ethers

✍ Scribed by Keigo Aoi; Masahiko Okada; Masatoshi Miyamoto

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 235 KB
• Volume: 18
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.1997.030180103

✦ Synopsis

Abstract

Sequence‐controlled oligomers of cyclic imino ethers were synthesized by the one‐pot multi‐stage feeding method. Selective formation of the sequence was clearly demonstrated by equimolar reactions between the monomers and 1:1 adducts of an initiator with the monomers. Efficiency of the sequence control is determined by the difference of reactivities of the active ends. A new general prerequisite to synthesize a well‐defined sequence by multi‐stage oligomerization was proposed.