Thermal Reactions of Chloroarenes with Hydrogen Sulfide in the Presence of Methanol
作者:E. N. Deryagina、E. N. Sukhomasova、E. P. Levanova、L. K. Papernaya、N. A. Korchevin
DOI:10.1007/s11178-006-0009-9
日期:2005.11
Gas-phase reactions of chloroarenes (ClC6H4X, X = H, 4-CH3, 4-OH, 4-Cl, 4-CF3) with hydrogen sulfide or its precursors were investigated in the presence of methanol, which was a stronger H-donor than hydrogen sulfide. Introducing methanol increased the selectivity of arenethiols formation at X = H and 4-CH3 and did not affect the reaction selectivity at acceptor X. The efficiency of methanol influence was considered from the viewpoint of free-radical reaction mechanism and the stability of the arenethiyl radicals.
在甲醇存在下,研究了氯苯(ClC6H4X,X = H、4-CH3、4-OH、4-Cl、4-CF3)与硫化氢或其前体的气相反应。甲醇是一种比硫化氢更强的氢供体。引入甲醇增加了X=H和4-CH3时生成芳基硫醇的选择性,并且不影响受体X反应的选择性。从自由基反应机制和芳基硫基自由基的稳定性出发,考虑了甲醇影响的效率。