tert-butyl 2,6-diazaspiro[3.3]heptane-2-carboxylate oxalate 、
1-(propan-2-yl)-1H-imidazole-4-carboxylic acid hydrochloride 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
以100 %的产率得到tert-butyl 6-(1-isopropyl-1H-imidazole-4-carbonyl)-2,6-diazaspiro[3.3]heptane-2-carboxylate