Metal complexes with macrocyclic ligands, XVII. Synthesis of two key intermediates for the preparation of mono-N-functionalized tetraazamacrocycles and their metal complexes
作者:Markus Hediger、Thomas A. Kaden
DOI:10.1002/hlca.19830660319
日期:1983.5.5
With a modification of the cyclization procedure of Richman & Atkins [8] the two macrocycles 1,4,7-tritosyl-11-benzyl-1,4,7,11-tetraazacyclotetradecane (8) and 1,7,11-tritosyl-4-trityl-1,4,7,11-tetraazacyclotetradecane (15) were prepared. After selective cleavage of the benzyl and trityl group, respectively, one obtains the two key products 1,4,7-tritosyl-11-benzyl-1,4,7,11-tetraazacyclotetradecane
修改Richman&Atkins [8]的环化程序后,两个大环1,4,7-三甲苯基-11-苄基-1,4,7,11-四氮杂环十四烷(8)和1,7,11-三甲苯基-制备4-三苯甲基-1,4,7,11-四氮杂环十四烷(15)。分别选择性裂解苄基和三苯甲基后,得到两个关键产物1,4,7-三甲苯基-11-苄基-1,4,7,11-四氮杂环十四烷(9)和1,7,11-三甲苯基-4-三苯甲基-1,4,7,11-四氮杂环十四烷(16),具有三个由甲苯磺酰基保护的N-原子,一个可用于进一步反应。