Reactions of phenylenedioxytrihalophosphoranes with arylacetylenes: VII. Reaction of 2,2,2-trichloro-4-fluoro-1,3,2λ5-benzodioxaphosphole with phenylacetylene
作者:V. F. Mironov、A. A. Shtyrlina、E. N. Varaksina、Yu. Ya. Efremov、A. I. Konovalov
DOI:10.1007/s11178-005-0102-5
日期:2004.12
2,2,2-Trichloro-4-fluoro-1,3,2λ5-benzodioxaphosphole reacts with phenylacetylene to give 2,7-dichloro-5-fluoro-4-phenyl-2H-1,2λ5-benzoxaphosphinine 2-oxide. Hydrolysis of the latter leads to opening of the oxaphosphinine ring with formation of (E)-2-(4-chloro-2-fluoro-6-hydroxyphenyl)-2-phenylethenylphosphonic acid.
2,2,2-三氯-4-氟-1,3,2λ5-苯并二氧磷杂环戊烯与苯乙炔反应生成2,7-二氯-5-氟-4-苯基-2H-1,2λ5-苯并氧磷杂环己烯2-氧化物。后者水解后,氧磷杂环己烯环打开,生成(E)-2-(4-氯-2-氟-6-羟基苯基)-2-苯基乙烯基膦酸。