Reactions of carbonyl compounds with tervalent phosphorus reagents. Part 10. Monochlorophosphines and aldehydes
作者:Norman J. De' ath、J. Allen Miller、M. John Nunn、Denis Stewart
DOI:10.1039/p19810000776
日期:——
The reaction of chlorophosphines (1) with aldehydes to give α-chloroalkylphosphine oxides (11) has been shown to involve two stable organophosphorus intermediates. Detailed study of the reaction of chlorodiphenylphosphine (1a) with benzaldehyde has revealed that the intermediates are α-chlorobenzyl α-(diphenylphosphinoyl)benzyl ether (8a) and bis-[α-(diphenylphosphinoyl)benzyl] ether (12a), and that
氯膦(1)与醛的反应生成α-氯烷基膦氧化物(11)已显示涉及两种稳定的有机磷中间体。氯二苯基膦(1a)与苯甲醛反应的详细研究表明,中间体为α-氯苄基α-(二苯基膦酰基)苄基醚(8a)和双-[α-(二苯基膦酰基)苄基]醚(12a),仅形成为一种非对映异构体。2-氯2,2,3,5四苯基1,4,2λ 5 -dioxaphospholan(4A)被建议作为这些膦氧化物的前体,并且对于整个途径α-chlorobenzyldiphenylphosphine氧化物(11A)的实验证据被表达。这些复杂反应的先前合理化证明需要重新评估。