Nucleophilic displacement by azide and cyanide on Baylis–Hillman acetates in water
摘要:
Baylis-Hillman acetates undergo smooth nucleophilic displacement with sodium azide and sodium cyanide in water under mild conditions to afford the corresponding ethyl 2-azidomethyl-3-phenylpropenoate, 2-azidomethyl-3-phenylacryloniti-ile and 2-(phenylmethylidene)succinonitrile in excellent yields. (c) 2005 Elsevier Ltd. All rights reserved.
Divergent Amine-Catalyzed [4 + 2] Annulation of Morita–Baylis–Hillman Allylic Acetates with Electron-Deficient Alkenes
作者:Silong Xu、Rongshun Chen、Zifeng Qin、Guiping Wu、Zhengjie He
DOI:10.1021/ol2032569
日期:2012.2.17
+ 2] annulation of Morita–Baylis–Hillman allylic acetates 2 with electron-deficientalkenes or diazenes has been developed for efficient syntheses of highly functionalized cyclohexenes, tetrahydropyridazines, and important spirocycles. This reaction unveils a new reactivity pattern of the intensely studied allyliccompounds 2 acting as a C4 synthon in Lewis base catalyzed annulationreactions and also
Stereoselective Synthesis of Functionalized 1,4-Dienes
作者:Sonia Khamri、Taoufik Turki、Hassen Amri
DOI:10.1080/00397910802116609
日期:2008.9.12
Abstract The article reports a stereoselective synthesis of functionalized 1,4-dienes 5, 6 by coupling allylic Baylis–Hillman acetates 1 and vinyl magnesium chloride at low temperature and in the presence of a catalytic amount of LiCuBr2 (3%).
Palladium-catalyzed α-regioselective allylic amination of Morita–Baylis–Hillman acetates with simple aromatic amines
作者:Yan Wang、Li Liu、Dong Wang、Yong-Jun Chen
DOI:10.1039/c2ob25976a
日期:——
An efficient allylic amination of Morita–Baylis–Hillman acetates with simplearomaticamines provided good yields with excellent α-regioselectivity (up to exclusive α-product) under the catalysis of Pd2(dba)3/ferrocene-type diphosphine ligand.
DABCO catalyzed facile synthesis of highly functionalized pyrazolines from Baylis–Hillman acetates and ethyl diazoacetate
作者:Palakodety Radha Krishna、Y. Lakshmi Prapurna
DOI:10.1016/j.tetlet.2010.10.006
日期:2010.12
A convenient synthesis of pyrazolines is reported via DABCO mediated reaction of ethyl diazoacetate (EDA) with Baylis–Hillmanacetates. The products were obtained in good to excellent yields (70–95%).