REACTIVITY OF THE ACIDS OF TRIVALENT PHOSPHORUS AND THEIR DERIVATIVES. PART IX. THE >P-0<sup>−</sup> AND >P-S<sup>−</sup> NUCLEOPHILES IN THE REACTIONS OF HALOPHILIC SUBSTITUTION
作者:Leszek Dembkowski、Dariusz Witt、Janusz Rachon
DOI:10.1080/10426509708040504
日期:1997.8.1
nucleophile and methyl α-bromocarboxylate, are further evidence for halophilic substitution as the principal process in the X-philic substitution/SET tandem mechanism operating in the reaction of these phosphorus nucleophiles with the bromederivatives possessing electron-withdrawing groups.
REACTIVITY OF THE ACIDS OF TRIVALENT PHOSPHORUS AND THEIR DERIVATIVES. PART VI. THE REACTION OF THE >P—O<sup>−</sup> ANIONS WITH BENZYL BROMIDES <i>para</i>-SUBSTITUTED IN THE PHENYL RING
作者:Dariusz Witt、Janusz Rachon
DOI:10.1080/10426509608029649
日期:1996.1.1
Abstract The reaction of p-substituted benzyl bromides with the >P—O− ions in THF, alcohols and toluene as the solvents is described. According to the reduction potential of the p-substituted benzyl bromides and the solvent used the formation of the P—C bond, debromination and/or dimerization occur. The principal process is believed to be X-philic substitution, the dimers are formed through a secondary
摘要 描述了对取代苄基溴与 >PO- 离子在四氢呋喃、醇和甲苯作为溶剂中的反应。根据对位取代苄基溴化物的还原电位和所用溶剂形成PC键,发生脱溴和/或二聚反应。主要过程被认为是亲 X 取代,二聚体通过二次过程通过 SET 从对位取代的苄基阴离子形成对位取代的苄基溴。
A phosphoryl radical-initiated Atherton–Todd-type reaction under open air
A phosphoryl radical-initiated Atherton-Todd-type reaction using air as the radical initiator and CHCl3 as the halogenating reagent for the phosphorylation of alcohols, phenols, and amines has been developed. This novel transformation provides a highly efficient route to important phosphinates, phosphinic amides, and phosphoramidates in up to 99% yield with a broad substrate scope under very mild conditions
Electrochemical Dehydrogenative Phosphorylation of Alcohols for the Synthesis of Organophosphinates
作者:Lingling Deng、Yang Wang、Haibo Mei、Yi Pan、Jianlin Han
DOI:10.1021/acs.joc.8b02882
日期:2019.1.18
An eco-friendly and efficient method for the synthesis of organophosphinates via an electrochemical cross-dehydrogenative-coupling reaction between alcohols and secondary phosphine oxides has been developed. This electrochemical reaction was conducted at room temperature without the addition of any oxidant, metal catalyst, or additive, which provides a new strategy for the synthesis of organophosphinates
Reactions of 7-methoxyimino-4-methylchromene-2,8-dione with phosphines. Preparation of N-substituted 7-amino-8-hydroxy-4-methyl-2H-[1]-benzopyran-2-ones
作者:Demetrios N. Nicolaides、Raed Wajih Awad、Konstantinos E. Litinas、Elizabeth Malamidou-Xenikaki
DOI:10.1016/0040-4020(96)00923-4
日期:1996.11
7-Methoxyimino-4-methylchromene-2,8-dione 2 reacts with triarylphosphines 1(a-d) to give the unexpected 7-arylamino-8-hydroxy-4-methyl-2H-[1]-benzopyran-2-ones 7(a-d) and methyl diarylphosphinates 8(a-d) in high yields. The reaction of 2 with trialkylphosphines 1(e,f) as well as with diphenylphosphine 15 leads to the formation of the N-dialkylphosphinoyl derivatives 11, 12, 14 and the N-diphenylphosphinoyl