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采用邻苯基苯酚及三氯化磷为原料,氯化锌为催化剂,以“一锅法”合成了新型含磷阻燃剂9,10-二氢-9氧杂-10-磷杂菲-10-氧化物(DOPO)及10-(2’,5’-二羟基苯基)-9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(ODOPB),并通过红外光谱、1H核磁谱、元素分析等对这两种化合物进行结构鉴定。合成DOPO的方法,不采用有机溶剂,因而安全、环保、产品纯度高达99.5%,满足所有应用的要求。
Using o-phenylphenol and phosphorus trichloride as raw materials, zinc chloride as a catalyst, a one-pot method was used to synthesize a new phosphorus-containing flame retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene- (DOPO) and 10- (2 ’, 5’-dihydroxyphenyl) -9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) The structures of these two compounds were identified by IR, 1H NMR and elemental analysis. The method of synthesizing DOPO does not use organic solvents, so it is safe and environmentally friendly, and the product purity is up to 99.5%, meeting the requirements of all applications.