Organophotoredox-Catalyzed Formation of Alkyl–Aryl and −Alkyl C–S/Se Bonds from Coupling of Redox-Active Esters with Thio/Selenosulfonates
作者:Yue Dong、Peng Ji、Yueteng Zhang、Changqing Wang、Xiang Meng、Wei Wang
DOI:10.1021/acs.orglett.0c03624
日期:2020.12.18
A mild organophotoredox synthetic protocol for forming a Csp3–S/Se bond by reacting widespread redox-active esters with thio/selenosulfonates has been developed. The power of the synthetic manifold is fueled by an unprecedented broad substrate scope and wide functional group tolerance.
已经开发出一种温和的有机光氧化还原合成方案,通过使广泛的氧化还原活性酯与硫代/硒磺酸盐反应形成 C sp 3 –S/Se 键。前所未有的广泛底物范围和广泛的官能团耐受性推动了合成歧管的力量。
The cyclosulfonylation reaction: A comment on the radical reactions of 4-pentenyl tosylate
作者:Donald C Craig、Alexander Durie、Gavin L Edwards、David J Sinclair
DOI:10.1016/0040-4039(94)02446-i
日期:1995.2
Attempted free radical rearrangement of the para-toluenesulfonyl ester of 4-penten-1-ol in carbon tetrachloride gives only the simple Kharasch 1,2-adduct, instead of the 2-substituted tetrahydrofuran as claimed by Serra and da Silva Correa.
Thioalkylation of nucleoside-H-phosphonates and its application to solid phase synthesis of oligonucleotides
作者:Wolfgang K.-D. Brill
DOI:10.1016/0040-4039(94)02380-t
日期:1995.1
A facile method for the thioalkylation of H-phosphonate diesters is presented. It can be used in the solid phase synthesis of oligonucleotides according to the H-phosphonate method.
Intramolecular homolytic substitution at the sulfur atom: an alternative way to generate phosphorus- and sulfur-centered radicals
Two efficient procedures involving tin hydride or thiophenol-mediated intramolecular homolytic substitution at the sulfur atom are reported. They lead to the generation of varied P(V)-centered radicals from the corresponding aryl or alkyne thiophosphorus substrates. The radical formed can be trapped by an olefin via an intermolecular addition, leading to the construction of C–P bonds. Thiophosphination
An interesting rearrangement of unsaturated sulphonate and thiosulphonate esters
作者:Arménio C. Serra、Carlos M.M. da Silva Corrêa
DOI:10.1016/0040-4039(91)80246-3
日期:1991.11
Alkenyl tosylates and thiotosylates, in the presence of radical initiators, undergo radical rearrangements to the corresponding tetrahydrofuran and tetrahydrothiophen derivatives.