Hemisynthesis of methyl pyrethroates from γ-alkoxy-alkylidene malonates and isopropylidenediphenylsulfurane and isopropylidenetriphenylphosphorane
摘要:
Hemi synthesis of methyl pyrethroates from gamma-alkoxy-alkylidene malonates and isopropylidenediphenylsulfurane and isopropylidenetriphenylphosphorane is disclosed. It takes advantage of the high degree of stereocontrol observed in the cyclopropanation of gamma-alkoxy-alkylidene malonates by the above mentioned ylides. (C) 2004 Elsevier Ltd. All rights reserved.
Methyl (1R,2R)- and (1S,2S)-1-Cyano-2-[(S)-2,2-dimethyl-1,3-dioxolan-4-yl]cyclopropane-1-carboxylate
作者:C. Cativiela、M. D. Díaz-de-Villegas、J. A. Gálvez、A. I. Jiménez、M. P. López
DOI:10.1107/s0108270196010281
日期:1996.12.15
In the title diastereomeric compounds, C11H15NO4, the methyl ester group adopts a bisecting conformation with the carbonyl O atom eclipsing the cyclopropane ring. In the crystals of both compounds, the molecules are piled up along one of the crystallographic axes.
Jimenez, Blanca; Martin, Nazario; Martinez-Grau, Angeles, Journal of Heterocyclic Chemistry, 1995, vol. 32, # 4, p. 1381 - 1384
作者:Jimenez, Blanca、Martin, Nazario、Martinez-Grau, Angeles、Seoane, Carlos、Marco, Jose L.
DOI:——
日期:——
Hemisynthesis of methyl pyrethroates from γ-alkoxy-alkylidene malonates and isopropylidenediphenylsulfurane and isopropylidenetriphenylphosphorane
作者:Alain Krief、Alexandre Froidbise
DOI:10.1016/j.tet.2004.06.035
日期:2004.8
Hemi synthesis of methyl pyrethroates from gamma-alkoxy-alkylidene malonates and isopropylidenediphenylsulfurane and isopropylidenetriphenylphosphorane is disclosed. It takes advantage of the high degree of stereocontrol observed in the cyclopropanation of gamma-alkoxy-alkylidene malonates by the above mentioned ylides. (C) 2004 Elsevier Ltd. All rights reserved.