explored the potential of cyclopentyl methylether (CPME) as a solvent for radicalreactions. Hydrostannation, hydrosilylation, hydrothiolation, and tributyltin hydride mediated reductions were successfully carried out in CPME. GC–MS analysis indicated that CPME degraded into methyl pentanoate, cyclopentanone, 2-cyclopenten-1-ol, and cyclopentanol under thermal radical conditions, albeit only slightly.
Highly stereoselective anti-Markovnikov hydrothiolation of alkynes and electron-deficient alkenes by a supported Cu-NHC complex
作者:Yong Yang、Robert M. Rioux
DOI:10.1039/c4gc00642a
日期:——
A robust silica-supported Cu-NHC complex catalyzed highly stereoselective anti-Markovnikov hydrothiolation of alkynes or electron-deficient alkenes to construct C–S bonds.
Carbon Dioxide Mediated Stereoselective Copper-Catalyzed Reductive Coupling of Alkynes and Thiols
作者:Siti Nurhanna Riduan、Jackie Y. Ying、Yugen Zhang
DOI:10.1021/ol3003699
日期:2012.4.6
A simple protocol for the stereoselective copper-catalyzed hydrothiolation of alkynes under a CO2 atmosphere has been developed. The stereoselectivity is determined by the presence/absence of a CO2 atmosphere. The reaction system is robust and utilizes inexpensive, readily available substrates. A cyclic alkene/carboxylate copper complex intermediate is proposed as the key step in determining the stereoselectivity
Straightforward and highly efficient catalyst-free regioselective reaction of thiol to β-nitrostyrene: a concise synthesis of vinyl sulfide and nitro sulfide
作者:Cheng-Ming Chu、Zhijay Tu、Pohsi Wu、Chieh-Chieh Wang、Ju-Tsung Liu、Chun-Wei Kuo、Yu-Hsuan Shin、Ching-Fa Yao
DOI:10.1016/j.tet.2009.02.074
日期:2009.5
Under catalyst-free reaction conditions, solvent-mediated addition of thiol 2 to β-nitrostyrene 1 proceeded with regioselective control to afford either adduct 3 or vinylsulfide 4 in good to excellent yield. Thermodynamic and autocatalytic reaction mechanisms were proposed to rationalize the products thus formed.
Revisiting thiol-yne chemistry: Selective and efficient monoaddition for block and graft copolymer formation
作者:Johannes K. Sprafke、Jason M. Spruell、Kaila M. Mattson、Damien Montarnal、Alaina J. McGrath、Robert Pötzsch、Daigo Miyajima、Jerry Hu、Allegra A. Latimer、Brigitte I. Voit、Takuzo Aida、Craig J. Hawker
DOI:10.1002/pola.27345
日期:2015.1.15
The untapped potential of radical thiol‐yne mono‐additionchemistry is exploited to overcome the known limitations of thiol‐ene chemistry in polymer coupling and block copolymer formation. By careful choice of alkyne, the reaction can selectively lead to the mono‐additionproduct with efficiencies surpassing those achieved by traditional thiol‐ene chemistry. This improvement is illustrated by the nearly