Studies on Synthesis of Antibacterial Agent (NM441). I. Kinetics and Mechanism of the Reaction of 4-(Bromomethyl)-5-methyl-1,3-dioxol-2-one with 1-Substituted Piperazine (NM394)
作者:Hiroshi Nishida、Tatsuya Fujii、Yoshiaki Abiru、Katsuya Yatsuki、Masashi Yamamoto、Naoki Shimizu、Kazuo Kakemi、Miyako Mikawa、Masahiro Kise
DOI:10.1246/bcsj.67.1419
日期:1994.5
When a tertiary amine (4,NM441) is synthesized from 4-bromomethyl-5-methyl-1,3-dioxol-2-one (DMDO-Br) and a secondary amine (3,NM394) in N,N-dimethylformamide (DMF), the quaternary ammonium salt 5, the ring-opened compound 6, and the 1,2-adduct 7 are formed as by-products. The tertiary amine 4 is formed by nucleophilic attack of 3 on the α-carbon to the bromine atom of DMDO-Br. The ring-opened compound
当叔胺 (4,NM441) 由 4-bromomethyl-5-methyl-1,3-dioxol-2-one (DMDO-Br) 和仲胺 (3,NM394) 在 N,N-二甲基甲酰胺中合成时 ( DMF)、季铵盐5、开环化合物6和1,2-加合物7作为副产物形成。叔胺 4 是由 3 亲核攻击 α-碳对 DMDO-Br 的溴原子形成的。开环化合物6是由3亲核攻击DMDO-Br的羰基碳形成的。季铵盐 5 是通过 DMDO-Br 与 4 的反应(门舒特金反应)形成的。7 形成的主要途径是 3 到 6 的迈克尔加成。研究了反应动力学,并根据动力学结果提出了获得 4 抑制 5、6 和 7 形成的方法。