N-(3,4-dimethylisoxazol-5-yl)-4-((2-hydroxybenzylidene)amino)benzenesulfonamide 、
catechol isopropylborate 以
苯 为溶剂,
以79%的产率得到3'-(4-(N-(benzo[d][1,3,2]dioxaborol-2-yl)-N-(3,4-dimethylisoxazol-5-yl)sulfamoyl)phenyl)-2l4-spiro[benzo[d][1,3,2]dioxaborole-2,2'-benzo[e][1,3,2]oxazaborinin]-3'-ium