of electrophilic substitution in the benzene ring, the corresponding diarylmethylphosphonates or [phenylenebis(arylmethylene)]- diphosphonates. The reaction of diphenyl [(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phosphonate with 2-methylbenzene-1,3-diol at a ratio of 1: 1 afforded 3-(3,5-di-tert-butyl-4-hydroxyphenyl)-6-hydroxy-7-methyl-2-phenoxy-2,3-dihydro-1,2λ5-benzoxaphosphol-6-one
在
三氟甲磺酸的存在下,[(3,5-二叔丁基-4-氧代环己-2,5-二烯基-1,亚烷基)甲基]二烷基酯与
苯酚和苯二醇反应,得到苯中的亲电取代产物环上,相应的二芳基
甲基膦酸酯或[亚苯基双(芳基亚甲基)]-
二膦酸酯。二苯基[((3,5-二叔丁基-4-氧代环己-2,5-二烯基-1,亚烷基)甲基]
膦酸酯]与2-甲基苯-1,3
-二醇的比例为1:1得到3-(3,5-二-叔丁基-
4-羟基苯基)-6-羟基-7-甲基-2-苯氧基-2,3-二氢- 1,2λ 5 -benzoxaphosphol -6-酮。