[(4R,5R)-2,2,4,5-tetramethyl-1,3-dioxolan-4-yl]methanol   、                                                                                      
(E)-ethyl 4-(tert-butoxycarbonyloxy)but-2-enoate                                                                                                                                                              在
                                                                                                                                                                                 [iridium(CH
2CHCH
2)(C
6H
2(Cl)(NO
2)COO)((R)-2,2'-bis(diphenylphosphino)-5,5'-dichloro-6,6'-dimethoxy-1,1-biphenyl)]                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                    反应 72.0h,
                                                                                                                以68%的产率得到(R),(E)-ethyl 5-hydroxy-5-[(4R,5R)-2,2.4,5-tetramethyl-1,3-dioxolan-4-yl]pent-2-enoate