Ionic liquid triethylamine-bonded sulfonic acid {[Et3N–SO3H]Cl} as a novel, highly efficient and homogeneous catalyst for the synthesis of β-acetamido ketones, 1,8-dioxo-octahydroxanthenes and 14-aryl-14H-dibenzo[a,j]xanthenes
作者:Abdolkarim Zare、Ahmad Reza Moosavi-Zare、Maria Merajoddin、Mohammad Ali Zolfigol、Tahereh Hekmat-Zadeh、Alireza Hasaninejad、Ardeshir Khazaei、Mohammad Mokhlesi、Vahid Khakyzadeh、Fatemeh Derakhshan-Panah、Mohammad Hassan Beyzavi、Esmael Rostami、Azam Arghoon、Razieh Roohandeh
DOI:10.1016/j.molliq.2011.12.012
日期:2012.3
the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes from β-naphthol (2 equiv.) and aldehydes (1 equiv.) in harsh conditions (120 °C) in the absence of solvent. High yields, relatively short reaction times, efficiency, generality, clean process, simple methodology, low cost, easy work-up, ease of preparation and regeneration of the catalyst and green conditions (in the synthesis of the xanthene derivatives)
在这项工作中,新型布朗斯台德酸性离子液体三乙胺键合磺酸[Et 3 N–SO 3 H] Cl,N,N -N-二乙基-N-磺基硫代氯化铵}作为均相和绿色催化剂的效率,通用性和适用性研究了各种条件下的有机转化。在此,在[Et 3 N–SO 3H] Cl的研究:(i)由苯乙酮,醛,乙腈和乙酰氯在溶液中和在极温和的条件下(室温)合成β-乙酰氨基酮,(ii)制备1,8-二氧-八氢氧杂蒽在中等温度(80°C)下于无溶剂条件下由二甲酮(5,5-二甲基-1,3-环己二酮)(2当量)和醛(1当量)合成,以及(iii)14-芳基-14 H-二苯并[ a,jβ-萘酚(2当量)和醛(1当量)中的]黄嘌呤在苛刻条件下(120°C)且无溶剂存在。高收率,相对短的反应时间,效率,通用性,清洁的方法,简单的方法,低成本,后处理,催化剂的易于制备和再生以及绿色条件(在an吨衍生物的合成中)是该方法的优点。 [Et 3 N–SO