An expeditious route to phosphorus heterocycles based on ring-closing metathesis
摘要:
A convenient route for the synthesis of phosphorus diolefinic templates starting from the bifunctional reagent bis(diisopropylamino)vinylphosphine is presented. Ring closing olefin metathesis on this type of diene substrate revealed that the newly developed 4,5-dihydro-imidazol-2-ylidene ruthenium benzylidene complex 4 is in all aspects superior to the previously developed Grubbs' catalyst 1. (C) 2000 Elsevier Science Ltd. All rights reserved.
New Types of Stable Aldehydes: Formylphosphane and Formylphosphane Oxide
摘要:
The reactivity of the formyl group in alpha-phosphorus-substituted aldehydes 1 can be tuned by adjusting the coordination number of the phosphorus atom. When X is a lone pair, the formylphosphanes obtained are stable compounds, whereas when X=O a relatively unstable formylphosphane oxide is produced. R=iPr(2)N, cHex(2)N.
[EN] CHEMOSELECTIVE THIOL-CONJUGATION WITH ALKENE OR ALKYNE-PHOSPHONAMIDATES<br/>[FR] CONJUGAISON CHIMIOSÉLECTIVE D'UN THIOL AVEC DES ALCÈNE- OU ALCYNE-PHOSPHONAMIDATES
申请人:FORSCHUNGSVERBUND BERLIN EV
公开号:WO2018041985A1
公开(公告)日:2018-03-08
Disclosed are novel conjugates and processes for the preparation thereof. A process for the preparation of alkene- or alkyne-phosphonamidates comprises the steps of (I) reacting a compound of formula (III), with an azide of formula (IV), to prepare a compound of formula (V), reacting a compound of formula (V) with a thiol-containing molecule of formula (VI), resulting in a compound of formula (VII).
Synthesis of dinucleotides with 2′-C to phosphate connections by ring-closing metathesis
作者:Philip Børsting、Mikkel S. Christensen、Signe I. Steffansen、Poul Nielsen
DOI:10.1016/j.tet.2005.10.074
日期:2006.2
nucleosides with olefinic 2′-modifications were prepared; 2′-C-methylene, 2′-C-(propen-1-yl), 2′-C-allyl and 2′-O-allyl uridines, respectively. These were incorporated into dinucleotides with allyl phosphate or vinyl phosphonate linkages. Hence, six different dinucleotides were studied as substrates for RCM reactions, and from four of these, cyclic dinucleotides with connections between 2′-C and phosphorus
Synthesis and characterisation of zirconium containing phosphonium salts are reported, including the X-ray molecularstructuredetermination of [(Pri2)N}2P(Me)(CH2)2C(NBut)Zr(η-C5H5)2OSO2CF3]OSO2CF35a; lability of the zirconium–oxygen covalent bond in 5a allows the preparation of the phosphorus–zirconium dicationic species 6a[(Pri2)N}2P(Me)(CH2)2C(NBut)Zr(η-C5H5)][(OSO2CF3)]2.
合成和含鏻盐锆的表征报告,其中包括[(PR的透视分子结构判定我2)N} 2 P(Me)的(CH 2)2 C(NBU吨基)Zr(η-C 5 H 5)2 OSO 2 CF 3 ] OSO 2 CF 3 5a;5a中锆-氧共价键的不稳定性使得可以制备磷-锆双效键合物种6a [(Pr i 2)N} 2 P(Me)(CH 2)2 C(NBU吨基)Zr(η-C 5 H ^ 5)] [(OSO 2 CF 3)] 2。
Chemoselective thiol-conjugation with alkene or alkyne-phosphonamidates
申请人:FORSCHUNGSVERBUND BERLIN E.V.
公开号:US11161873B2
公开(公告)日:2021-11-02
Disclosed are novel conjugates and processes for the preparation thereof. A process tor the preparation of alkene- or alkyne-phosphonamidates comprises the steps of (I) reacting a compound of formula (III), with an azide of formula (IV), to prepare a compound of formula (V), reacting a compound of formula (V) with a thiol-containing molecule of formula (VI), resulting in a compound of formula (VII).