、 2-benzyloxycarbonylamino-3-(4-chloromethyl-1H-indazol-5-yl)-propionic acid methyl ester, hydrochloride 、
异丁胺 、
溶剂黄146 在
(9-isobutyl-8-oxo-3,6,7,8,9,10-hexahydro-2,3,9-triaza-cyclohepta[e]inden-7-yl)-carbamic acid benzyl ester 作用下,
以
甲苯 为溶剂,
以to give (9-Isobutyl-8-oxo-3,6,7,8,9, 10-hexahydro-2,3,9-triaza-cyclohepta[e]inden-7-yl)-carbamic acid benzyl ester in 91% yield的产率得到(9-isobutyl-8-oxo-3,6,7,8,9,10-hexahydro-2,3,9-triaza-cyclohepta[e]inden-7-yl)-carbamic acid benzyl ester