Tetrahedron Letters p. 2535 - 2538 (1981)
Update date:2022-08-05
Topics:
Bethaeuser, Willi
Regitz, Manfred
Theis, Wolfgang
The aryl substituted diazo compounds 1a-e react with the triazolindione 2 under the evolution of nitrogen and the formation of the stable dipoles 4a-e.The dipoles resulting from the reaction of 1f-k with 2 cannot be isolated (4f-k) but trapped with ethanol (5f-k).Diazo compounds possessing a butadiene unit (7a-d and 10) prefer Diels-Alder-reaction with 2 and yield the polycycles 9a-d and 11.
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