1-[(3aS,4R,6S,6aS)-6-(tert-butyldimethylsilyloxy)-2,2-dimethyl-tetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl]-1H-imidazo[4,5-c]pyridin-bis-Boc-4-amine 在
N-氯代丁二酰亚胺 作用下,
以
二氯甲烷 为溶剂,
反应 8.0h,
以92%的产率得到7-chloro-1-((3aS,4R,6S,6aS)-6-(tert-butyldimethylsilyloxy)-2,2-dimethyl-tetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)-1H-imidazo[4,5-c]pyridin-bis-Boc-4-amine