Beckmann-Chapman rearrangement of 2,2,6,6-tetramethyl-4-oximinopiperidine-1-oxyl to 2,2,7,7-tetramethyl-5-oxohexahydro-1,4-diazepine-1-oxyl

Autor: Rozantsev, E. G., Chudinov, A. V., Sholle, V. D.
Zdroj: Russian Chemical Bulletin; September 1980, Vol. 29 Issue: 9 p1510-1513, 4p
Abstrakt: Conclusions 1.The tosyl ester of 2,2,6,6-tetramethyl-4-oximinopiperidine-1-oxyl undergoes Beckmann-Chapman rearrangement at room temperature without involving the paramagnetic center.2.The Beckmann-Chapman rearrangement is a convenient method for the synthesis of 2,2,7,7-tetramethyl-5-oxohexahydro-1,4-diazepine-1-oxyl and some of its derivatives.3.2,2,7,7-Tetramethyl-5-oxohexahydro-1,4-diazepine-1-oxyl in dilute solution displays a tendency to form dimeric paramagnetic complexes.
Databáze: Supplemental Index
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