Mechanistic and synthetic aspects of amine oxidations promoted by 3-methyl-5-ethyllumiflavinium perchlorate
摘要:
Preparative and kinetic aspects of the chemistry of 3-methyl-5-ethyllumiflavinium perchlorate (1) with primary and secondary amines have been investigated. Reactions of 1 with primary and secondary amines leads to rapid production of modestly stable C4a-adducts. The rates of these processes, determined by stopped-flow kinetic methods, parallel amine nucleophilicities. The C4a-adducts undergo benzylamine promoted elimination reactions to produce N-benzylaldimine products with fates that parallel reactivity profiles expected for E(2)-elimination processes. Finally, flavinium salt 1 serves as a catalyst for oxidations of primary and secondary amines under aerobic conditions. (C) 1997 Elsevier Science Ltd.
Mechanistic and synthetic aspects of amine oxidations promoted by 3-methyl-5-ethyllumiflavinium perchlorate
摘要:
Preparative and kinetic aspects of the chemistry of 3-methyl-5-ethyllumiflavinium perchlorate (1) with primary and secondary amines have been investigated. Reactions of 1 with primary and secondary amines leads to rapid production of modestly stable C4a-adducts. The rates of these processes, determined by stopped-flow kinetic methods, parallel amine nucleophilicities. The C4a-adducts undergo benzylamine promoted elimination reactions to produce N-benzylaldimine products with fates that parallel reactivity profiles expected for E(2)-elimination processes. Finally, flavinium salt 1 serves as a catalyst for oxidations of primary and secondary amines under aerobic conditions. (C) 1997 Elsevier Science Ltd.
Mechanistic and synthetic aspects of amine oxidations promoted by 3-methyl-5-ethyllumiflavinium perchlorate
作者:Susan E Hoegy、Patrick S Mariano
DOI:10.1016/s0040-4020(97)00206-8
日期:1997.4
Preparative and kinetic aspects of the chemistry of 3-methyl-5-ethyllumiflavinium perchlorate (1) with primary and secondary amines have been investigated. Reactions of 1 with primary and secondary amines leads to rapid production of modestly stable C4a-adducts. The rates of these processes, determined by stopped-flow kinetic methods, parallel amine nucleophilicities. The C4a-adducts undergo benzylamine promoted elimination reactions to produce N-benzylaldimine products with fates that parallel reactivity profiles expected for E(2)-elimination processes. Finally, flavinium salt 1 serves as a catalyst for oxidations of primary and secondary amines under aerobic conditions. (C) 1997 Elsevier Science Ltd.