Thiolation of Terminal Alkynes with Thiuram Disulfide Reagents Using Water as the Hydrogen Source: Stereoselective Synthesis of (<i>Z</i>)-Vinyl Sulfides
作者:Dan Wang、Jing Du、Wan-Li Lin、Yue-Sheng Li、Zhi-Bing Dong
DOI:10.1021/acs.joc.3c01730
日期:2023.12.15
with alkynes in dimethyl sulfoxide (DMSO)/H2O could give (Z)-vinyl sulfides in good yields (up to 88%). This protocol features broad substrate scope, good stereoselectivity, high atom economy, good yields, and is transition metal-free. Mechanistic studies revealed that water and DMSO served as hydrogen sources, which greatly highlighted the unique reactivity of this special reaction involving two H-atom
报道了末端炔烃的立体选择性且环境友好的硫醇化。二硫化秋兰姆试剂(二硫化四甲基秋兰姆和二硫化四乙基秋兰姆)与炔烃在二甲亚砜(DMSO)/H 2 O中反应可以以良好的收率(高达88%)得到( Z )-乙烯基硫醚。该方案具有底物范围广、立体选择性好、原子经济性高、收率好、不含过渡金属等特点。机理研究表明,水和DMSO作为氢源,这极大地凸显了这种涉及两个氢原子供体的特殊反应的独特反应性。