(3aR,7aR)-2-[(E)-3-chloroprop-2-enyl]-1,3-dimethyl-3a,4,5,6,7,7a-hexahydrobenzo[d][1,3,2]diazaphosphole 2-oxide   、                                                                                      [(E)-Trityloxyimino]-acetic acid tert-butyl ester                                                                                                                                                              在
                                                                                                                                                                                 
sodium hexamethyldisilazane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以72%的产率得到(2R,3R)-3-[(E)-2-((3aR,7aR)-1,3-Dimethyl-2-oxo-octahydro-2λ
5-benzo[1,3,2]diazaphosphol-2-yl)-vinyl]-1-trityloxy-aziridine-2-carboxylic acid tert-butyl ester