Highly regioselective control of 1,2-addition of organolithiums to α,β-unsaturated compounds promoted by lithium bromide in 2-methyltetrahydrofuran: a facile and eco-friendly access to allylic alcohols and amines
摘要:
Very high regioselective 1,2-addition of organolithiums to alpha,beta-unsaturated carbonyl-like compounds (ketones, aldehydes, and imines) in the presence of LiBr was achieved by carrying out reactions in the sustainable solvent 2-methyltetrahydrofuran. Excellent yields (in isolated product) of allylic alcohols and allylic amines were recovered under a simple experimental procedure at 0 degrees C. (C) 2011 Elsevier Ltd. All rights reserved.
The preparation of lithium organocuprates from various Cu(I) salts
作者:Steven H. Bertz、Charles P. Gibson、Gary Dabbagh
DOI:10.1016/s0040-4039(00)96477-3
日期:1987.1
Various Cu(I) salts have been tested as precursors for organocuprates in side-by-side comparisons under controlled conditions. CuCN and CuBr·SMe2 appear to be superior to CuI, CuBr, and CuCl. CuSCN and CuOTf are also good precursors in some circumstances.
BERTZ, STEVEN H.;GIBSON, CHARLES P.;DABBAGH, GARY, TETRAHEDRON LETT., 28,(1987) N 37, 4251-4254
作者:BERTZ, STEVEN H.、GIBSON, CHARLES P.、DABBAGH, GARY
DOI:——
日期:——
(2-HYDROXY)ETHYL-THIOUREAS USEFUL AS MODULATORS OF ALPHA2B ADRENERGIC RECEPTORS
申请人:Allergan, Inc.
公开号:EP1381593A2
公开(公告)日:2004-01-21
[EN] (2-HYDROXY)ETHYL-THIOUREAS USEFUL AS MODULATORS OF ALPHA2B ADRENERGIC RECEPTORS<br/>[FR] (2-HYDROXY)ETHYLTHIOUREAS UTILES EN TANT QUE MODULATEURS DES RECEPTEURS ADRENERGIQUES ALPHA2B
申请人:ALLERGAN INC
公开号:WO2002068384A2
公开(公告)日:2002-09-06
Compounds of formula (i) and of formula (ii), wherein the symbols have the meaning disclosed in the claims, specifically or selectively modulate α2A adrenergic receptors and as such are useful for alleviating chronic pain and allodynia and have no or only minimal cardiovascular and/or sedatory activity. The invention also relates to a method of activating α2B or α2C adrenergic receptors in a mammal by administering a compound that has α2Bor α2C adrenergic receptor activity and has no significant α2A agonist activity.
Highly regioselective control of 1,2-addition of organolithiums to α,β-unsaturated compounds promoted by lithium bromide in 2-methyltetrahydrofuran: a facile and eco-friendly access to allylic alcohols and amines
作者:Vittorio Pace、Laura Castoldi、Pilar Hoyos、José Vicente Sinisterra、Massimo Pregnolato、José Ma Sánchez-Montero
DOI:10.1016/j.tet.2011.01.067
日期:2011.4
Very high regioselective 1,2-addition of organolithiums to alpha,beta-unsaturated carbonyl-like compounds (ketones, aldehydes, and imines) in the presence of LiBr was achieved by carrying out reactions in the sustainable solvent 2-methyltetrahydrofuran. Excellent yields (in isolated product) of allylic alcohols and allylic amines were recovered under a simple experimental procedure at 0 degrees C. (C) 2011 Elsevier Ltd. All rights reserved.