3R-(3-ethoxycarbonylpropylcarbamoyl)-piperazine-1-carboxylic acid tert-butyl ester 、
8,11-dichloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b] pyridine 在
三乙胺 作用下,
以
乙腈 为溶剂,
生成
4-(8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11S-yl)-3R-(3-ethoxycarbonylpropylcarbamoyl)-piperazine-1-carboxylic acid tert-butyl ester 、 4-(8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11R-yl)-3R-(3-ethoxycarbonylpropylcarbamoyl)-piperazine-1-carboxylic acid tert-butyl ester