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ChemInform Abstract: Thermal Reactions of 5-Alkylidene-4,5-dihydro-3H-1,2,4(λ3)-diazaphospholes (4-Phosphapyrazolines) — A Route to Various P-Heterocycles and to 2-Phosphabutadienes.

✍ Scribed by B. MANZ; U. BERGSTRAESSER; J. KERTH; G. MAAS

Publisher
John Wiley and Sons
Year
2010
Weight
39 KB
Volume
28
Category
Article
ISSN
0931-7597

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✦ Synopsis

Thermal

Reactions of 5-Alkylidene-4,5-dihydro-3H-1,2,4(λ 3 )diazaphospholes (4-Phosphapyrazolines) -A Route to Various P-Heterocycles and to 2-Phosphabutadienes.

-The title diazaphospholes have a much higher thermal stability than their analogues without the exocyclic double bond. On thermolysis, in most cases extrusion of nitrogen occurs and P-containing heterocycles are obtained that are difficult to obtain otherwise. The thermolysis occurs different depending on the substitution pattern, mostly in competing reaction pathways. -(MANZ, B.;

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