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Direct α-chlorination of O,O-dialkyl chalcogenophosphonates with phosphorus oxychloride

✍ Scribed by Stéphane Mons; Nicolas Sabourault; Emmanuel Klein; Charles Mioskowski; Luc Lebeau

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
59 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

a-Chlorination of phosphonates, and O,O-dialkyl thio-and selenophosphonates involving the direct reaction of their lithiated anion with phosphorus oxychloride is described. The reaction gives good results where previously known methods fail. The role of the chalcogen atom, and the influence of the nature of the alkyl chain with respect to the reactivity are discussed.

📜 SIMILAR VOLUMES

The isomerization/chlorination of nitrog
The isomerization/chlorination of nitrogen heterocyclic O,O-dialkyl thiophosphoramidates with phosphorus oxychloride—A convenient synthesis of nitrogen heterocyclic S-alkyl thiophosphoramidic acid derivatives
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In this article, it is reported that the isornerization/ chlorination reactions of nitrogen heterocyclic 0, O-dialkyl thiophosphoramidates 5 with equivalent amounts of phosphorus oxychloride give nitrogen heterocyclic S-alkyl thiophosphorochloridates 6 and 0alkyl phosphorodichloridates 3. After remo

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The isomerization/chlorination of 0,0-dialkyl methylthiophosphonates with phosphorus oxychloride—a new convenient synthesis of S-alkyl methylthiophosphonic acid derivatives
✍ Chu Chi Tang; Fu Peng Ma; Kun Zhang; Zheng Jie He; Yao Chun Jin 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 346 KB

A new method for the synthesis of S-alkyl methylthiophosphonic acid derivatives is reported. The chlorination of 0,O-dialkyl methylthiophosphonates 8 with phosphorus oxychloride proceeds with isomerization of the P = S to the P-S bond to give S-alkyl methylthiophosphonochloridates 9, which react fur