Stereospecific synthesis of transoid mono- and 1,3-diene pheromones ofLepidoptera from secondary cyclopropylcarbinols
摘要:
The zinc halide-initiated homoallylic rearrangement of saturated or allylic cyclopropylcarbinols in the presence of trimethylsilyl halides has been employed as the key step in the total synthesis of seven behavioral regulators in twenty insects of the Lepidoptera family, namely 9E-tetradecenol and its acetate, 11E-hexadecenol and its acetate, 11E-hexadecenal, 5E, 7E-dodecadienol, and 3E,5E-tetradecadienyl acetate.
Simple synthesis of?-silyloxyacylcyclopropanes and the homoallyl rearrangement of cyclopropylcarbinols by the action of trimethylsilyl halides in the presence of zinc halides
摘要:
The ZnCl2 catalyzed condensation of 1-trimethylsilyloxyvinylcyclopropane with aldehydes and ketones gave beta-silyloxyacylcyclopropanes, which were converted by the action of TsOH in boiling benzene into 1-cyclopropyl-2E-alken-1-ones. Reduction of the latter gave saturated and allyl cyclopropylcarbinols, which by means of Me3SiX and catalytic amounts of ZnX2 (X = Cl, Br) were highly selectively converted into the corresponding linear mono- and dienic E-homoallyl halides. The sequence of reactions that was worked out provided an effective synthesis of 3E-dodecenyl acetate, a sex pheromone of the sugar beet moth.
Synthesis of ?-silyloxyacylcyclopropanes catalyzed by zinc salts and the homoallylic rearrangement of cyclopropylcarbinols by the action of trimethylsilyl halides
作者:N. M. Ivanova、B. A. Cheskis、A. M. Moiseenkov、O. M. Nefedov
DOI:10.1007/bf00963040
日期:1990.1
IVANOVA, N. M.;CHEEKIS, B. A.;MOISEENKO, A. M.;NEFEDOV, O. M., IZV. AN CCCP. CEP. XIM.,(1990) N, S. 225-236
作者:IVANOVA, N. M.、CHEEKIS, B. A.、MOISEENKO, A. M.、NEFEDOV, O. M.
DOI:——
日期:——
CHESKIS, B. A.;IVANOVA, N. M.;MOISEENKOV, A. M.;NEFEDOV, O. M., IZV. AN CCCP. CEP. XIM.,(1990) N, S. 2025-2036
作者:CHESKIS, B. A.、IVANOVA, N. M.、MOISEENKOV, A. M.、NEFEDOV, O. M.
DOI:——
日期:——
Simple synthesis of?-silyloxyacylcyclopropanes and the homoallyl rearrangement of cyclopropylcarbinols by the action of trimethylsilyl halides in the presence of zinc halides
作者:B. A. Cheskis、N. M. Ivanova、A. M. Moiseenkov、O. M. Nefedov
DOI:10.1007/bf00958248
日期:1990.9
The ZnCl2 catalyzed condensation of 1-trimethylsilyloxyvinylcyclopropane with aldehydes and ketones gave beta-silyloxyacylcyclopropanes, which were converted by the action of TsOH in boiling benzene into 1-cyclopropyl-2E-alken-1-ones. Reduction of the latter gave saturated and allyl cyclopropylcarbinols, which by means of Me3SiX and catalytic amounts of ZnX2 (X = Cl, Br) were highly selectively converted into the corresponding linear mono- and dienic E-homoallyl halides. The sequence of reactions that was worked out provided an effective synthesis of 3E-dodecenyl acetate, a sex pheromone of the sugar beet moth.
Stereospecific synthesis of transoid mono- and 1,3-diene pheromones ofLepidoptera from secondary cyclopropylcarbinols
作者:B. A. Cheskis、N. M. Ivanova、A. M. Moiseenkov、O. M. Nefedov
DOI:10.1007/bf00958841
日期:1990.11
The zinc halide-initiated homoallylic rearrangement of saturated or allylic cyclopropylcarbinols in the presence of trimethylsilyl halides has been employed as the key step in the total synthesis of seven behavioral regulators in twenty insects of the Lepidoptera family, namely 9E-tetradecenol and its acetate, 11E-hexadecenol and its acetate, 11E-hexadecenal, 5E, 7E-dodecadienol, and 3E,5E-tetradecadienyl acetate.