JOURNAL of the Tunisian Chemical Society

serving the Research, the Education and the Industry

Synthesis, structure determination and photolysis of Δ1-pyrazolines

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1,3-Cycloaddition of 2-diazopropane (DAP) 1 with indenone 2 led to an expected Δ1-pyrazoline 4. The Addition of 1 with 4,6-dimethylbicyclo[3.3.1]nona-3,6-diene-2,8-dione 3 gave a mono-adduct 5 with an "inverse" regiochemical way and an "exo" stereochemistry. The photolysis of 4 and 5 gave an ethylenic derivative 6 and a gem-dimethyl cyclopropane 7 respectively. 

N. Boukamcha, M.T. Martin, A. Khemiss

2-diazopropane, Δ1-pyrazolines, photochemistry, gem-dimethyl cyclopropane

Pages 475-482

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