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Formation of Diazo Compounds on Decomposition of 2,3‐Diazabicyclo[3.1.0]hex‐2‐enes:[3+2]‐Cycloreversions
Author(s) -
Schneider Manfred,
Csacsko Bernd
Publication year - 1977
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.197708671
Subject(s) - diazo , decomposition , chemistry , bicyclic molecule , photochemistry , organic chemistry , medicinal chemistry , stereochemistry
The decomposition of bicyclic pyrazolines of type (1) has been elucidated: it proceeds via diazo compounds and carbenes. On direct UV irradiation of (1) in an NMR spectrometer rapid disappearance of the signals of (1) and the formation of (2) are observed. This is the first NMR identification of such an unstable diazo compound.