(R)-toluene-4-sulfonic acid 2-methyl-8-trifluoromethanesulfonyloxy-2,3-dihydro-benzo[1,4]dioxin-2-yl-methyl ester   、                                                                                      
2-氯苯基硼酸                                                                                                                                                                                                                                                                                                          以0.27 g (97%) of the title compound was obtained as a colorless oil的产率得到(R)-toluene-4-sulfonic acid 8-(2-chloro-phenyl)-2-methyl-2,3-dihydro-benzo[1,4]dioxin-2-yl-methyl ester