摘要 开发了一种高效的铜催化一锅法,用于从易于获得的2-碘或2-溴代苯甲酰胺,醛和叠氮化钠合成4-氨基喹唑啉。这种一锅法是通过连续的铜催化的S N Ar取代,还原,环化,氧化和互变异构进行的。以50–90%的收率获得了相应的目标产品(26个实例)。 开发了一种高效的铜催化一锅法,用于从易于获得的2-碘或2-溴代苯甲酰胺,醛和叠氮化钠合成4-氨基喹唑啉。这种一锅法是通过连续的铜催化的S N Ar取代,还原,环化,氧化和互变异构进行的。以50–90%的收率获得了相应的目标产品(26个实例)。
efficient Fe/Cu relay-catalyzed domino protocol has been developed for the synthesis of 2-phenylquinazolin-4-amines from commercially available ortho-halogenated benzonitriles, aldehydes, and sodium azide. This elegant domino process involved consecutive iron-mediated [3 + 2] cycloaddition, copper-catalyzed SNAr, reduction, cyclization, oxidation, and copper-catalyzeddenitrogenation sequences. The formed structure
已经开发了一种高效的Fe / Cu中继催化多米诺协议,用于从可商购的邻卤代苄腈,醛和叠氮化钠合成2-苯基喹唑啉-4-胺。这种优美的多米诺骨牌工艺涉及连续的铁介导的[3 + 2]环加成,铜催化的S N Ar,还原,环化,氧化和铜催化的脱氮序列。形成的结构是药物和生物活性分子中的特权核心。
Synthesis of quinazolinimines and quinazolinamines from 2-fluorobenzonitriles under catalyst-free conditions
作者:Jian-Bo Feng、Xiao-Feng Wu
DOI:10.1039/c5ob01587a
日期:——
A convenient procedure for the synthesis of quinazolinimines and quinazolinamines from 2-fluorobenzonitriles and 2-aminopyridines or amidines with KOtBu as the promotor has been developed.
Efficient synthesis of 2-arylquinazolin-4-amines <i>via</i> a copper-catalyzed diazidation and ring expansion cascade of 2-arylindoles
作者:Meng-Meng Xu、Wen-Bin Cao、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1039/c8cc07721e
日期:——
Copper-catalyzedsynthesis of 2-arylquinazolin-4-amines from readily available 2-arylindoles and TMSN3 has been developed. The mechanism study shows that the domino reaction may involve a free radical diazidation, denitrogenation, intramolecular cyclization and ring expansion sequence.
Dawson Heteropolyacid: A Green, Eco-Friendly, and Reusable Catalyst for One-Pot Synthesis of 4-Aminoquinazolines
作者:Fatemeh F. Bamoharram、Majid M. Heravi、Mina Roshani、Katayon Kosari
DOI:10.1080/15533174.2012.741181
日期:2013.1.1
A new multicomponent synthesis of 4-aminoquinazolines from the reaction of anthranilonitrile, acylchlorides, and ammonium acetate in the presence of catalytic amounts of Dawson-type heteropolyacids (HPAs) is reported. The catalytic performance of different forms of Dawson-type HPAs, H6 P2M18O62 (M = WVI, MoVI) and mixed addenda forms (M = CoII, CuII, NiII, MnIII) were compared and in all cases, maximum
据报道,在催化量的道森型杂多酸(HPA)存在下,由蒽腈,酰氯和乙酸铵反应可合成4-氨基喹唑啉的新的多组分合成方法。比较了不同形式的Dawson型HPA,H 6 P 2 M 18 O 62(M = W VI,Mo VI)和混合的附加形式(M = Co II,Cu II,Ni II,Mn III)的催化性能。在所有情况下,使用H 6 P 2 W 18 O 62均可观察到最大产量作为催化剂。估计了合理的机制。在所有情况下,Dawson催化剂都易于回收和循环利用,并保持其初始结构和活性。研究了反应条件的影响,结果表明反应收率良好。
Efficient Three-Component Synthesis of 4-Aminoquinazolines
作者:Majid M. Heravi、Samaheh Sadjadi、Negar Mokhtari Haj、Hossein A. Oskooie、Fatemeh F. Bamoharram
DOI:10.1080/00397910903019967
日期:2010.2.26
4-Aminoquinazolines were synthesized in good yields via a one-pot, three-component reaction of anthranilonitrile, acylchlorides, and ammonium acetate in the presence of catalytic amounts silica-supported Preyssler nanoparticles under refluxing conditions.