(R)-5-[5-(5-chloro-pyridin-3-yl)-2-fluoro-phenyl]-6,6-difluoro-5,7,7-trimethyl-[1,4]oxazepan-3-one   、                                                                                      
劳森试剂                                                                                                                                                                                              以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                                                        以yielded the (R)-5-[5-(5-chloro-pyridin-3-yl)-2-fluoro-phenyl]-6,6-difluoro-5,7,7-trimethyl-[1,4]oxazepan-3-thione (211 mg, 86% yield) as a white solid的产率得到(R)-5-[5-(5-chloro-pyridin-3-yl)-2-fluoro-phenyl]-6,6-difluoro-5,7,7-trimethyl-[1,4]oxazepan-3-thione