Radical Addition Reactions of Phosphorus Hydrides: Tuning the Reactivity of Phosphorus Hydrides, the Use of Microwaves and Horner–Wadsworth–Emmons-Type Reactions
作者:Christopher M. Jessop、Andrew F. Parsons、Anne Routledge、Derek J. Irvine
DOI:10.1002/ejoc.200500907
日期:2006.3
reactivity of phosphorus hydrides in radical addition reactions are compared, and the substituents on phosphorus are shown to affect the efficiency of the reactions. The change in reactivity is attributed to the different bond dissociation energies of the P–H bonds, which have been calculated. Phosphorus hydrides with particularly weak P–H bonds are shown to undergo radical additions by microwave irradiation
比较了自由基加成反应中磷氢化物的反应性,并表明磷上的取代基会影响反应的效率。反应性的变化归因于已计算出的 P-H 键的不同键解离能。在没有常规引发剂的情况下,具有特别弱 P-H 键的磷氢化物显示出通过微波辐射进行自由基加成。这些自由基加成反应产生硫代膦酸酯、硫代膦酸酯和硫化膦,它们在 HWE 型反应中反应,得到取代的烯烃。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)