作者:Sarbjeet Kaur、Gaoyuan Zhao、Evan Busch、Ting Wang
DOI:10.1039/c8ob02313a
日期:——
presence of visible light is used to initiate thiol–ene and thiol–yne reactions. Thiyl radicals are generated upon quenching the photoexcited catalyst with a range of thiols. The highlighted mild nature of the reaction conditions allows a broad substrate scope of the reactants. Relying on this efficient metal-free condition, both thiol–ene and thiol–yne reactions between carbohydrates and peptides could
Ruthenium-catalyzed cross-metathesis with electron-rich phenyl vinyl sulfide enables access to 2,3-dideoxy-<scp>d</scp>-ribopyranose ring system donors
units are important ringsystems found in nature. Herein, we develop a metal-mediated strategy to form this important scaffold featuring a cross-metathesis reaction of the corresponding sugar-derived hydroxyalkene with electron-rich phenyl vinylsulfide using commercially available ruthenium-catalysts under microwave irradiation as a key step. The final 2,3-dideoxyhexopyranose ring is generated in a
Air Oxidative Radical Oxysulfurization of Alkynes Leading to α-Thioaldehydes
作者:Shao-Fang Zhou、Xiang-Qiang Pan、Zhi-Hao Zhou、Adedamola Shoberu、Pei-Zhi Zhang、Jian-Ping Zou
DOI:10.1021/acs.joc.5b00641
日期:2015.5.15
Air oxidative radical oxysulfurization of alkynes initiated by 0.5 mol % tert-butyl hydroperoxide with arylthiols is described. The reaction proceeded at room temperature in the presence of 5% mol water to afford selective a-thioaldehydes.
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.
ICHINOSE, YOSHIFUMI;WAKAMATSU, KUNI;NOZAKI, KYOKO;BIRBAUM, JEAN-LUC;OSHIM+, CHEM. LETT.,(1987) N 8, 1647-1650