6-Iodo-hexanoic acid 5-(tert-butyl-dimethyl-silanyloxy)-6-cyano-1-methyl-hex-2-ynyl ester 、
3-hydroxybenzocyclobutenedione 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以77%的产率得到6-(7,8-Dioxo-bicyclo[4.2.0]octa-1,3,5-trien-2-yloxy)-hexanoic acid 5-(tert-butyl-dimethyl-silanyloxy)-6-cyano-1-methyl-hex-2-ynyl ester