在
10% palladium on active carbon 、 氢气 作用下,
以
甲醇 为溶剂,
反应 3.0h,
以98%的产率得到methyl 4-(4-(4-amino-N-(2,4-dimethoxybenzyl)benzamido)-N-(2,4-dimethoxybenzyl)benzamido)benzoate
参考文献:
名称:
An ‘impossible’ macrocyclisation using conformation directing protecting groups
摘要:
A p-benzenetricarboxamide macrocycle linked through secondary cis amides is obtained via cyclisation and subsequent deprotection of a folded linear precursor. Secondary benzamides strongly prefer the trans conformation, therefore this synthesis can be considered 'impossible' without recourse to protecting groups. (C) 2009 Elsevier Ltd. All rights reserved.
An ‘impossible’ macrocyclisation using conformation directing protecting groups
摘要:
A p-benzenetricarboxamide macrocycle linked through secondary cis amides is obtained via cyclisation and subsequent deprotection of a folded linear precursor. Secondary benzamides strongly prefer the trans conformation, therefore this synthesis can be considered 'impossible' without recourse to protecting groups. (C) 2009 Elsevier Ltd. All rights reserved.