(3aR,5S,6R,6aR)-5-[(1S)-1-acetoxybut-3-enyl]-6-benzyloxy-2,2-dimethyl-5-vinyltetrahydrofuro[2,3-d][1,3]dioxole                                                                                                                                                              在
                                                                                                                                                                                 
Grubbs catalyst first generation                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                以81%的产率得到[(1'S,3aR,5R,6R,6aR)-2,2-dimethyl-6-phenylmethoxyspiro[6,6a-dihydro-3aH-furo[2,3-d][1,3]dioxole-5,2'-cyclopent-3-ene]-1'-yl] acetate