5-chloro-3-hydroxy-3-(2-phenylethynyl)-1H-indol-2-one                                                                                                                                                              在
                                                                                                                                                                                 tert-butylammonium hexafluorophosphate(V)   、                                                                                                  calcium(II) trifluoromethanesulfonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         neat (no solvent)                                                                                  为溶剂,
                                                                                                                                                    反应 8.0h,
                                                                                                                生成                                                 (3R,4'S,7'R)-5-chloro-7'-phenyl-5'-(p-tolyl)-3a',4',7',7a'-tetrahydrospiro[indoline-3,9'-[4,7]ethanoisobenzofuran]-1',2,3'-trione