Tetrahedron Letters p. 5129 - 5132 (1990)
Update date:2022-08-02
Topics:
Liao, Yusheng
White, James B.
The exo and endo isomers of 6,7-diazo-3-oxotricyclo[3.2.2.02,4]non-6-ene have been prepared and their extrusion of nitrogen examined. The exo isomer 10 underwent the expected homo-retro-Diels-Alder reaction at room temperature to give 4,5-dihydrooxepin (11), but the endo isomer extruded nitrogen at>180 °C to give cyclohexenone.
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