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Paper | Regular issue | Vol 38, No. 7, 1994, pp.1601-1607
Published online, 1st January, 1970
DOI: 10.3987/COM-94-6731
Intramolecular Nitrile Imine Cycloadditions to the Acetylenic Bond in the Synthesis of Pyrazolo[1,5-a][4,1]benzoxazepines and Pyrazolo[1,5-a][5,1]benzoxazocines

Gianluigi Broggini, Luisa Garanti, Giorgio Molteni, and Gaetano Zecchi*

*Dipartimento di Chimica Organicane Industriale , dell‘Universitè , Via Golgi 19, I-20133 Milano, Italy


The intramolecular nitrile imine cycloaddition methodology has been applied to the construction of the title heterocyclic systems. The efficiency of this synthetic approach is rather variable, being markedly dependent on the kind of substitution at the acetylenic bond.