Cyclic organophosphorus compounds. Part VI. The hydrolysis of some 1,3,2-dioxaphospholans and 1,3,2-dioxaphosphorinans in aqueous alkali–dioxan solution
作者:R. S. Edmundson、A. J. Lambie
DOI:10.1039/j29670000577
日期:——
of the hydrogen atoms at positions 4 and 5 in the 2-thiono-1,3,2-dioxaphospholan ring system by methyl groups stabilises the ring by a constant factor of two (approximately) for solutions of the compounds in aqueous sodium hydroxide–dioxan. This effect is thought to be due to electronic rather than steric interactions, and is very much weaker than that produced by exocyclic groups attached to phosphorus
对于化合物在氢氧化钠水溶液中的溶液,逐步地用甲基取代2-硫代-1,3,2-二氧杂膦酰基环系统中位置4和5的氢原子,使该环稳定在一个恒定的2倍左右的常数下。 –二恶英。认为该作用是由于电子相互作用而不是空间相互作用,并且比与磷连接的环外基团产生的作用弱得多。在所采用的条件下,2-氧代-2-苯氧基-和2-乙氧基-4,4,5,5-四甲基-2-硫醇-1,3,2-二氧杂膦酰基酯主要产生开环产物。