Synthesis of new chiral N-substituted fused pyrazoles and pyrazolinols
摘要:
Treatment of beta-diketones and the corresponding beta-enaminoketones, having modified carane (2-ethyl-6,6-dimethylbicyclo[3.1.0]hexane) and p-menthane (3-ethyl-1-isopropylcyclopentane) skeletons, with aryl-and alkylhydrazines results in regioselective formation of N-substituted pyrazoles or stable pyrazolinols depending on the nature of the substituent at the hydrazine nitrogen. (C) 1997 Elsevier Science Ltd.
Synthesis of new chiral heterocycles of the pyrazole and 2-isoxazoline types from (+)-3-carene.
摘要:
Preparation of chiral heterocyclic compounds of the pyrazole and 2-isoxazoline types starting from natural monoterpene hydrocarbon (+)-3-carene is described. Stereochemical assignment of the compounds synthesized is made by NMR spectroscopy and X-ray analysis together with the data obtained by molecular mechanics and quantum chemical calculations.
Synthesis of new chiral N-substituted fused pyrazoles and pyrazolinols
作者:Sergey A. Popov、Makhmut M. Shakirov、Alexey V. Tkachev、Norbert De Kimpe
DOI:10.1016/s0040-4020(97)10239-3
日期:1997.12
Treatment of beta-diketones and the corresponding beta-enaminoketones, having modified carane (2-ethyl-6,6-dimethylbicyclo[3.1.0]hexane) and p-menthane (3-ethyl-1-isopropylcyclopentane) skeletons, with aryl-and alkylhydrazines results in regioselective formation of N-substituted pyrazoles or stable pyrazolinols depending on the nature of the substituent at the hydrazine nitrogen. (C) 1997 Elsevier Science Ltd.
Synthesis of new chiral heterocycles of the pyrazole and 2-isoxazoline types from (+)-3-carene.
作者:Sergey A. Popov、Alexey Yu. Denisov、Yuri V. Gatilov、Irina Yu. Bagryanskaya、Alexey V. Tkachev
DOI:10.1016/s0957-4166(00)86220-5
日期:1994.3
Preparation of chiral heterocyclic compounds of the pyrazole and 2-isoxazoline types starting from natural monoterpene hydrocarbon (+)-3-carene is described. Stereochemical assignment of the compounds synthesized is made by NMR spectroscopy and X-ray analysis together with the data obtained by molecular mechanics and quantum chemical calculations.