tri-tert-butyl ester 10-benzyloxymethyl-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid 、
ethyl (4-nitrobenzyl)phosphinate 以
苯 为溶剂,
反应 12.0h,
以85%的产率得到tri-tert-butyl ester 10-[ethoxy-(4-nitrobenzyl)phosphinoylmethyl]-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid