triethyloxonium fluoroborate 、
13,18-Dimethyl-2,7-methano-1,8-diazacyclodocosa-2,4,6,10,12,18,20-heptaene-14,16-diyne-9,22-dione 以
二氯甲烷 为溶剂,
反应 72.0h,
以9%的产率得到9,22-Diethoxy-13,18-dimethyl-2,7-methano-1,8-diazacyclodocosa-2,4,6,8,10,12,18,20,22-nonaene-14,16-diyne