2-[(6-Methyl-pyridin-3-ylmethyl)-carbamoyl]-piperazine-1,4-dicarboxylic acid 4-tert-butyl ester 1-(9H-fluoren-9-ylmethyl) ester 在
哌啶 、
1,2,2,6,6-五甲基哌啶 、 bromo-tris(1-pyrrolidinyl)phosphonium hexafluorophosphate 、
三氟乙酸 作用下,
生成 4-(3-Bromo-8-chloro-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)-piperazine-1,2-dicarboxylic acid 1-cyclohexylamide 2-[(6-methyl-pyridin-3-ylmethyl)-amide]