A New Approach to the Synthesis of Methyl (1S)-cis-3-(2-Acetoxyalkyl/ 2-Hydroxyalkyl/2-Oxoalkyl)-2,2-dimethylcyclopropanecarboxylates from ( + )-3-Carene
The photolysis of a series of gem-dimethyl 4-carbomethoxy 3H-pyrazoles, obtained from a ummon carbanionic precursor (preceding articals) leads to Cyclopropenic esters.These can be hydrogenated to the corresponding cis-disubstituted cyclopropanes which are direct precursors of chrysanthemates, pyrethric esters and analogous halopyrethroids.
Naik, R. H.; Bhat, N. G.; Kulkarni, G. H., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1983, vol. 22, # 12, p. 1209 - 1212
作者:Naik, R. H.、Bhat, N. G.、Kulkarni, G. H.
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Muljiani, Z.; Deshmukh, A. R. A. S.; Joshi, V. S., Synthetic Communications, 1984, vol. 14, # 13, p. 1239 - 1246
作者:Muljiani, Z.、Deshmukh, A. R. A. S.、Joshi, V. S.