Bifunctionalized Allenes. Part III. Bromination of 1-Substituted Phosphorylated Allenes
作者:Valerij Ch. Christov、Boris Prodanov
DOI:10.1080/10426500210226
日期:2002.1.1
electrophile-induced cyclic reaction of 1-substituted (1-methyl-, 1-benzyl-, 1-allyl-, 1-propargyl-, 1-phenylthio- and 1-phenylseleno-) 1,2-alkadienephosphonates and -phosphine oxides 1 and 2 . Bromination of 1-substituted 1,2-alkadienephosphonates 1 leads to formation of 4-bromo-2,5-dihydro-1,2 u 5 -oxaphosphol-2-oxides 3-8 , but the reaction with 1-substituted allenyl phosphine oxides 2 affords 4-bromo-2
通过亲电试剂诱导的 1-取代(1-甲基-、1-苄基-、1-烯丙基-、1-炔丙基- , 1-苯硫基-和 1-苯基硒基-) 1,2-链二烯膦酸酯和-氧化膦 1 和 2。1-取代的 1,2-链二烯膦酸酯 1 的溴化导致 4-bromo-2,5-dihydro-1,2 u 5-oxaphosphol-2-oxides 3-8 的形成,但与 1-取代的丙二烯基氧化膦反应2提供4-溴-2,5-二氢-1,2-氧杂磷溴化物9和10。