Certain 2-substituted 1,3-propylidenediphosphonate derivatives,
申请人:Symphar S.A.
公开号:US04696920A1
公开(公告)日:1987-09-29
2-Substituted-1,3-propylidenediphosphonates of formula (I), where A, R.sup.1 and R.sup.2 are defined in claim 1, are therapeutically active compounds, namely for the treatment of cardiovascular diseases. They can be prepared by reacting phosphonating agents with 1,3- dibromopropanes or ditosylates of 1,3-propanediols substituted in position 2. ##STR1## .
The Michaelis–Becker Reaction in Phosphonium and Imidazolium Ionic Liquids
作者:Anh P. Vu、Erika A. Shaffer、Laura K. Byington Congiardo、D. Andrew Knight
DOI:10.1080/10426500903329252
日期:2010.8.25
The Michaelis–Beckerreaction was performed in imidazolium ionic liquids using sodium hydroxide as base or sodium dialkylphosphites with good yield and selectivities. The analogous reaction performed in phosphonium ionic liquids resulted in decomposition to phosphine oxides.
HYPERVALENT IODINE IN SYNTHESIS. 49. A NEW EFFECTIVE SYNTHESIS OF Se-PHENYL<i>O,O</i>-DIALKYL PHOSPHOROSELENOATES WITH POLYMER-SUPPORTED PHENYLIODINE DIACETATE
作者:Da-Jun Chen、Zhen-Chu Chen
DOI:10.1081/scc-100000533
日期:2001.1
Se-phenyl O,O-dialkyl phosphoroselenoates have been prepared by the one-pot reaction of sodium O,O-dialkyl phosphorates, diphenyl diselenide, and polymer-supported phenyliodine diacetate (PPID).
Synthesis of phosphonates: a modified arbuzov procedure
作者:Meng Fang Wang、Martine M. L. Crilley、Bernard T. Golding、Tom McInally、David H. Robinson、Alan Tinker
DOI:10.1039/c39910000667
日期:——
Reactions of 6-iodogalactosides with either methyl or isopropyl diphenyl phosphite lead to diphenylphosphoryl derivatives; these can be converted by ester exchange into dibenzylphosphoryl derivatives, which are convenient precursors of carbohydrate phosphonic acids.
Hypervalent Iodine in Synthesis XXVII. Alkynylphenyliodonium Tosylates as Alkynylating Reagents: Direct Conversion of Alkynylphenyliodonium Tosylates to Dialkyl Alkynylphosphonates with Sodium Dialkylphosphonates
作者:Jun-Lian Zhang、Zhen-Chu Chen
DOI:10.1080/00397919808005087
日期:1998.1
Abstract Alkynylphenyliodoniumtosylates can easily react with sodium dialkylphosphonates to afford a convenient effective method for the preparation of dialkylalkynylphosphonates.