(R)-toluene-4-sulfonic acid 2-methyl-8-trifluoromethanesulfonyloxy-2,3-dihydro-benzo[1,4]dioxin-2-yl-methyl ester 、
苯硼酸 以0.26 g (100%) of the title compound was obtained as a colorless oil的产率得到(R)-toluene-4-sulfonic acid 2-methyl-8-phenyl-2,3-dihydro-benzo[1,4]dioxin-2-yl-methyl ester