苯酐   、                                                                                      
4-[1-[4-(2,4-Dihydro-1,3-benzoxazin-3-yl)phenyl]-1-(6-oxobenzo[c][2,1]benzoxaphosphinin-6-yl)ethyl]-2,6-diethylaniline                                                                                                                                                                                              以
                                                                                         
N,N-二甲基乙酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 4.0h,
                                                                                                                以80%的产率得到2-((4-(1-(4-(2H-benzo[e][1,3]oxazin-3(4H)-yl)phenyl)-1-(6-oxidodibenzo[c,e][1,2]oxaphosphinin-6-yl)ethyl)-2,6-diethylphenyl)carbamoyl)benzoic acid