Fast and effective reduction of nitroarenes by sodium dithionite under PTC conditions: application in solid-phase synthesis
作者:Robert Kaplánek、Viktor Krchňák
DOI:10.1016/j.tetlet.2013.03.010
日期:2013.5
conditions for the fast and effective reduction of aromatic nitro groups bound to hydrophobic polystyrene-based Wang and Ring resins utilizing sodium dithionite in dichloromethane–water under PTC conditions are reported. Tetrabutylammonium hydrogen sulfate (TBAHS) was found to be an effective phase-transfer catalyst for this reaction. This method allows for the reduction of nitro groups to amino groups under
在此,报道了在PTC条件下利用连二亚硫酸钠在二氯甲烷-水中快速有效地还原与疏水性聚苯乙烯基Wang和Ring树脂结合的芳族硝基的条件。发现四丁基硫酸氢铵(TBAHS)是该反应的有效相转移催化剂。该方法允许在温和条件下将硝基还原为氨基,并完全转化,并且可以耐受其他官能团。该方法是基于氯化锡(II)的还原方法的优良替代方法,该方法以其缺点而著称。