A convenient synthesis of bisamide from aldehyde and amide with BF3 etherate as catalyst was reported. Both aryl and aliphatic bisamides could be prepared with this procedure in high yield at room temperature and the catalyst loading as low as 0.5 mol % was achieved. Fine-tuned solvent was utilized for both rapid conversion and simple isolation. Two CB2 receptor inverse agonists were synthesized with
Carbon-based nanocatalyst: An efficient and recyclable heterogeneous catalyst for one-pot synthesis of gem-bisamides, hexahydroacridine-1,8-diones and 1,8-dioxo-octahydroxanthenes
作者:Jaspreet Kour、Monika Gupta、Bushra Chowhan、Vivek K. Gupta
DOI:10.1007/s13738-019-01723-1
日期:2019.12
acid as a solid acid catalyst. This nanocatalyst is recyclable and also exhibited very high activity. Novel carbon-based nanocatalyst, i.e. cellulose[2-(sulfooxy)ethyl]mercaptosulfonic acid[SEMSA] was successfully synthesized by reacting mercaptoethanol and chlorosulfonic acid, and the catalytic activity of the prepared catalysts was evaluated for the one-pot synthesis of gem-bisamides from various aldehydes
摘要在此摘要中,我们讨论了磺化碳基材料在各种酸催化的有机转化中的进展,然后将其进一步应用于医学领域,实验室和工业中。采用一种简单新颖的方法制备了碳基纳米催化剂,即纤维素[2-(磺氧基)乙基]巯基磺酸作为固体酸催化剂。该纳米催化剂是可回收的,并且还表现出非常高的活性。巯基乙醇与氯磺酸反应成功合成了新型的碳纳米催化剂纤维素[2-(磺氧基)乙基]巯基磺酸[SEMSA],并评价了所制备催化剂的催化活性,用于一锅法合成宝石。-通过醛和二甲酮与芳族醛,二甲酮和乙酸铵或芳香胺和1,8-二氧-八氢氧杂蒽的三组分缩合,可得自各种醛和苯甲酰胺的双酰胺,六氢ac啶-1,8-二酮。与传统的合成方法相比,这种新的非均相纳米催化剂系统的应用具有高收率,反应时间短,生态友好,操作简便的优点,并且已通过1 H等研究确定了合成产物核磁共振和131 H NMR。在各种催化剂中,发现该纳米催化剂,即纤维素[2-(磺氧基)乙基]
An Efficient Synthesis of Symmetrical Bisamides Catalysed by Molecular iodine under Neutral Conditions
作者:Hongshe Wang、June Zeng
DOI:10.3184/174751912x13383107316656
日期:2012.8
An efficient synthesis of symmetrical bisamides is described in which aldehydes are reacted with amides in the presence of 5 mol% of iodine to give the corresponding bisamides in high yields under neutral conditions.
Ultrasound-Promoted Synthesis of Symmetrical Bisamides by Reaction between Aromatic Aldehydes and Amides Catalysed by P-Toluenesulfonic Acid
作者:Raziyeh Pyrzehi-Bakhshani、Alireza Hassanabadi
DOI:10.3184/174751916x14495888748571
日期:2016.1
Reactionbetween aldehydes and amides catalysed by p-toluene sulfonic acid (p-TSA), under ultrasound irradiation and ambient conditions, gives symmetrical bisamide derivatives in excellent yield and in short time.
A mild, efficient, and environmentally friendly synthesis of N,N′-arylidene bisamides using B(HSO4)3 under solvent-free conditions
作者:Zahed Karimi-Jaberi、Baharak Pooladian
DOI:10.1007/s00706-012-0848-8
日期:2013.5
AbstractA green, efficient, and rapid procedure for the synthesis of N,N′-arylidene bisamide derivatives has been developed by one-pot condensation of aldehydes and amides in the presence of tris(hydrogensulfato)boron as a highly effective heterogeneous catalystundersolvent-freeconditions at 100 °C. Various aromatic aldehydes, acetamide or benzamide were used in the reaction, and in all cases the