2-amino-4-(4-chlorophenyl)-4,5-dihydro-5-oxopyrano[3,2-c]chromene-3-carbonitrile   、                                                                                      
(E)-N,N-dimethyl-4-((phenylimino)methyl)aniline                                                                                                                                                                                              以
                                                                                         
正丁醇                                                                                  为溶剂,
                                                                                                                                                    反应 10.0h,
                                                                                                                以30%的产率得到7-(4-chlorophenyl)-10-[4-(dimethylamino)phenyl]-8,9,10,11-tetrahydro-6H,7H,8H-[3,1]oxazino[5',4':5,6]pyrano[3,2-c]chromene-6,8-dione