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。
Silicananoparticles as a reusable catalyst: a straightforward route for the synthesis of thioethers, thioesters, vinyl thioethers and thio-Michael adducts under neutral reaction conditions
作者:Subhash Banerjee、Jayanta Das、Richard P. Alvarez、Swadeshmukul Santra
DOI:10.1039/b9nj00399a
日期:——
A simple and straightforward route for the synthesis of thioethers, thioesters, vinyl thioethers and thio-Michael adducts has been demonstrated using silica nanoparticles (NPs) as a reusable catalyst via the 1,2-addition of thiols to alkenes, alkynes and alkyl/acyl halides, and the 1,4-addition of thiols to conjugated alkenes at room temperature.
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.
Native silica nanoparticle catalyzed anti-Markovnikov addition of thiols to inactivated alkenes and alkynes: a new route to linear and vinyl thioethers
A newroute for the synthesis of linear and vinyl thioethers has been demonstrated using bare silica nanoparticle as catalyst at room temperature under solvent-free conditions. The catalyst can be reused up to six times without loss of catalytic activity.
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
Efficient synthesis of vinyl and alkyl sulfides via hydrothiolation of alkynes and electron-deficient olefins using soluble and heterogenized gold complexes catalysts
Soluble and heterogenized gold complexes catalyze the hydrothiolation of alkynes and electron-deficient olefins in high yields and with high anti-Markovnikov selectivity. Moreover heterogenized catalysts could be recycled in several successive runs without any loss of activity or selectivity.