(R)-N-(3-acetamido-2-chloro-4-{4-fluorophenylsulphonyl}phenyl)-2-hydroxy-2-methyl-3,3,3-trifluoropropanamide   、                                                                                      
C.I.酸性橙108                                                                                                                                                              在
                                                                                                                                                                                 
氩   、                                                                                                  
甲醇   、                                                                                                  
methanol-dichloromethane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以to give the title compound (247 mg) as a brown solid的产率得到(R)-N-{3-Acetamido-2-chloro-4-[4-(2-hydroxyethylamino)phenylsulphonyl]phenyl}-2-hydroxy-2-methyl-3,3,3-trifluoropropanamide