Conversion of α acetylenic alcohols into αβ unsaturated aldehydes
作者:Marc Julia、Christian Lefebvre
DOI:10.1016/s0040-4039(00)99836-8
日期:1984.1
Very mild conditions have been found for the efficient regioselective addition of phenylthiol to ethynyl carbinols. A biphasic aqueous acid hydrolysis then leads to α,β-unsaturated aldehydes. The Meyer-Schuster rearrangement is thus brought about in two steps.
作者:Sergey S. Zalesskiy、Nikita S. Shlapakov、Valentine P. Ananikov
DOI:10.1039/c6sc02132h
日期:——
The carbon–sulfurbondformation reaction is of paramount importance for functionalized materials design, as well as for biochemical applications. The use of expensive metal-based catalysts and the consequent contamination with trace metal impurities are challenging drawbacks of the existing methodologies. Here, we describe the first environmentally friendly metal-free photoredox pathway to the thiol–yne
碳硫键形成反应对于功能化材料设计以及生物化学应用至关重要。使用昂贵的金属基催化剂以及随之而来的痕量金属杂质污染是现有方法的具有挑战性的缺点。在这里,我们描述了第一个环保的无金属光氧化还原途径进行硫醇-炔点击反应。使用曙红Y作为廉价且易于获得的催化剂,以高收率(高达91%)和优异的选择性(高达60:1)获得C-S偶联产物。开发了一种 3D 打印光反应器,用于创建具有温度稳定性的平行反应阵列,以提高催化系统的性能。
Synthesis of vinyl sulfides using glycerol as a recyclable solvent
作者:Eder J. Lenardão、Márcio S. Silva、Renata G. Lara、Júnior M. Marczewski、Maraisa Sachini、Raquel G. Jacob、Diego Alves、Gelson Perin
DOI:10.3998/ark.5550190.0012.222
日期:——
alkynes promoted by KF/Al2O3, usingglycerol as recyclablesolvent. This improved method furnishes selectively the corresponding anti-Markovnikov vinylsulfides in good to excellent yields starting from terminal alkynes and aliphatic or aromatic thiols. The irradiation with microwaves facilitated the procedure and accelerates the reaction. The catalytic system and the glycerol can be re-used up to four
Synthesis of vinyl sulfides under base-free conditions using selenium ionic liquid
作者:Samuel Thurow、Naiana T. Ostosi、Samuel R. Mendes、Raquel G. Jacob、Eder J. Lenardão
DOI:10.1016/j.tetlet.2012.03.076
日期:2012.5
A very simple procedure is described for the efficient synthesis of vinyl sulfides by hydrothiolation of terminal alkynes using 1-n-butyl-3-methylimidazolium methylselenite, [bmim][SeO2(OCH3)]. The reaction proceeds cleanly under mild, base-free conditions and was performed with aromatic and aliphatic thiols. (C) 2012 Elsevier Ltd. All rights reserved.
JULIA, M.;LEFEBVRE, CH., TETRAHEDRON LETT., 1984, 25, N 2, 189-192