A concise synthesis of sex pheromone of mediterranean fruit fly,<i>Ceratitis capitata</i>via lithiated carbanion derived from enephosphoramide
作者:Tomasz Krzysztof Olszewski、Claude Grison
DOI:10.1002/hc.20588
日期:——
A novel and versatile synthetic approach to the preparation of (E)-non-6-en-1-ol, a sexpheromone of the Mediterraneanfruitfly, Ceratitis capitata, is presented. This pheromone can be viewed as potential active component for lures designed to control and eradication of Mediterraneanfruitfly. The described protocol is a six-step reaction sequence producing the desired compound with 28% overall yield
Equivalents anioniques homoenolates issus d'enephosphoramides: reaction avec la benzophenone
作者:Ph. Coutrot、J.R. Dormoy、A. Moukimou
DOI:10.1016/s0022-328x(00)99263-5
日期:1983.11
α-Phosphoramidolithium substituted allylic carbanions are used as homoenolate reagents with benzophenone and give regioselectively α- or γ-hydroxyalkylation products. Replacement of lithium by magnesium leads to γ substitution almost exclusively. Acidic hydrolysis of the adducts is a novel route to γ-lactol.
The amino group of N-allylic amines which is protected by a phosphorylated grouping hinders nitrogen—boron coordination and allows normal addition of the boron hydrides.
被磷酸化基团保护的N-烯丙基胺的氨基会阻碍氮-硼配位并允许氢化硼的正常添加。
Benmaarouf-Khallaayoun, Z.; Baboulene, M.; Speziale, V., Synthetic Communications, 1985, vol. 15, # 3, p. 233 - 242
作者:Benmaarouf-Khallaayoun, Z.、Baboulene, M.、Speziale, V.、Lattes, A.
DOI:——
日期:——
Lithiated anions derived from (alkenyl)pentamethyl phosphoric triamides: Useful synthons for the stereoselective synthesis of 9-oxo- and 10-hydroxy-2(E)-decenoic acids, important components of queen substance and royal jelly of honeybee Apis mellifera
作者:Tomasz K. Olszewski、Catherine Bomont、Philippe Coutrot、Claude Grison
DOI:10.1016/j.jorganchem.2010.06.020
日期:2010.10
Lithiated anions derived from (alkenyl) pentamethyl phosphoric triamides as homoenolate equivalents are used in the reaction with halogenated acetal and ketal giving regioselectively the gamma-alkylation adducts. Chemoselective acidic hydrolysis of the enephosphoramide moiety in the presence of acetal or ketal groups leads to expected carbonyl products, key intermediates in the synthesis of natural compounds. The synthetic potential of the presented strategy is illustrated by stereoselective synthesis of two pheromones namely, 9-oxo-2(E)-decenoic acid 1 from queen substance and 10-hydroxy-2(E)-decenoic acid 2 from royal jelly of honeybee Apis mellifera. (C) 2010 Elsevier B.V. All rights reserved.