dichloro-isopropyl-borane 、
dichloro-propyl-borane 、
1,1,2,2,3,3,4,4-环丁烷辛醇 以
苯 为溶剂,
生成
1,2:2,3:3,4:4,1-tetrakis[propylboranediylbis(oxy)]cyclobutane 、 1,2:2,3:3,4:4,1-tetrakis[propylboranediylbis(oxy)]cyclobutane (isomer, three n-propyl and one isopropyl groups)