4-cyclopent-3-enyl-2-diazo-3-oxo-butyric acid 2-oxo-1-phenyl-2-pyrrolidin-1-yl-ethyl ester                                                                                                                                                              在
                                                                                                                                         Rh
2[(N-(4-dodecylphenyl)sulfonyl)-(S)-prolinate]4                                                                                                                                                                          作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以61%的产率得到2-oxo-1,2,3,3a,4,6a-hexahydro-pentalene-1-carboxylic acid 2-oxo-1-phenyl-2-pyrrolidin-1-yl-ethyl ester