Waste-Free Solid-State Organic Syntheses: Solvent-Free Alkylation, Heterocyclization, and Azo-Coupling Reactions
作者:Ehab Abdel-Latif、Mohamed A. Metwally
DOI:10.1007/s00706-007-0665-7
日期:2007.8
allow for waste-free quantitative syntheses. The solid–solid reactions of α-haloketones with several pyrazolones and with thiosemicarbazones were shown to afford the corresponding pyrazolyl ethers and 4-substituted 2-(arylidenehydrazino)thiazoles. The product yields are quantitative in all cases and the products do not require purifying workup. Therefore, these reactions are truly solvent-free, sustainable
固态技术可实现无浪费的定量合成。研究表明,α-卤代酮与几种吡唑啉酮和硫代半氨基甲酮的固-固反应可提供相应的吡唑基醚和4-取代的2-(亚芳基肼并基)噻唑。在所有情况下,产品产量都是定量的,不需要纯化处理。因此,这些反应是真正无溶剂的,可持续的,并且不会产生废物。通过相应的胺与NO 2气体的气固反应,可以定量获得硝酸重氮。它是通过与各种偶联化合物( 例如 β-萘酚,乙酰乙酰苯胺,吡唑啉酮和巴比妥酸)进行固相偶联而用于环境合成偶氮染料的有用材料 。