4-bis(triphenylphosphonio)buta-1, 3-diene dichloride with 10% NaOH gave isomeric 4-diphenylphosphoryl-4-phenylbut-1(2)-enes and 1-diphenylphosphoryl-1-phe-nylbuta-1, 3-diene, the products of anionotropic migration of a phenyl group from the P atom to the α-position. Hydrolysis with Na2CO3 afforded only the diene product. In both cases, triphe-nylphosphine and triphenylphosphine oxide were isolated as
1,4-双(
三苯基膦)buta-1, 3-二烯二
氯化物用 10% NaOH 碱
水解得到异构的 4-diphenylphosphoryl-4-phenylbut-1(2)-enes 和 1-diphenylphosphoryl-1-phen-nylbuta- 1, 3-二烯,苯基从 P 原子向α-位的阴离子迁移产物。用 Na2CO3
水解只得到二烯产物。在这两种情况下,
三苯基膦和
三苯基氧化膦作为副产物被分离出来。2-
氯-1,4-双(
三苯基膦)丁-2-烯二
溴化物与
三苯基膦的脱
氯化氢反应被提出作为制备1,4-双(
三苯基膦)-1,3-二烯二
溴化物的新途径。