六氟丙酮 、
2-(dimethylamino)-1,3-dimethylpyrido[2,3-d][1,3,2]diazaphosphinin-4-one 以
二氯甲烷 为溶剂,
以76%的产率得到2-(dimethylamino)-2',4'-dimethyl-4,4,5,5-tetrakis(trifluoromethyl)spiro[1,3-dioxa-2λ5-phosphacyclopentane-2,3'-2,4,10-triaza-3λ5-phosphabicyclo[4.4.0]deca-1(6),7,9-triene]-5'-one