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。
An efficient method to prepare 4-aminoquinazolines: Potential application to conformation-restricted bleomycin analogs
作者:Zhonglin Wei、Lianyou Zheng、Qun Dang、Xu Bai
DOI:10.1002/jhet.238
日期:2009.11
4‐aminoquinazolines were designed as conformation‐restricted bleomycinanalogs. An efficientmethod was developed to prepare the 4‐aminoquinazoline heterocyclic nucleus, which entails a two‐step one‐pot procedure leading to 4‐aminoquinazolines in good yields. The application of this method to synthesis 4‐aminoquinazoline bleomycinanalogs is envisioned. J. Heterocyclic Chem., (2009).
One-Pot Synthesis of 2-Arylquinazolines and Tetracyclic Isoindolo[1,2-<i>a</i>]quinazolines<i>via</i>Cyanation Followed by Rearrangement of<i>ortho</i>-Substituted 2-Halo-<i>N</i>-arylbenzamides
作者:Sachin D. Gawande、Manoj R. Zanwar、Veerababurao Kavala、Chun-Wei Kuo、R. R. Rajawinslin、Ching-Fa Yao
DOI:10.1002/adsc.201400505
日期:2015.1.12
2‐arylquinazoline derivatives and tetracylic isoindolo[1,2‐a]quinazoline via cyanation followed by rearrangement of ortho‐substituted 2‐halo‐N‐arylbenzamides is described. Using dimethyl sulfoxide (DMSO) as the solvent, the cleavage of the tetracyclic isoindole fused quinazoline leads to the formation of 2‐arylquinazoline derivatives. When 1,4‐dioxane is used as the solvent, tetracyclic isoindole fused
Novel domino synthesis of 2‐(2,3.4‐substituted phenyl) quinazolin‐4‐amine
作者:Walid Fathalla、Pavel Pazdera、Mohamed E. Khalifa、Ibrahim A. I. Ali、Samir M. El Rayes
DOI:10.1002/jhet.4435
日期:2022.5
Convenient domino protocol was developed for the synthesis of 2-arylquinazolin-4-amines by the reaction of N-(2-cyanophenyl) substituted benzimidoyl isothiocyanates with isopropyl amine. The major advantages of this protocol are short reaction times, mild conditions, simple work up, high yields, and pure products. The efficacy of this protocol owes to the competence of synthesis, pure isolation of
Palladium-Catalyzed Synthesis of 4-Aminoquinazolines from Amide Oxime Ethers and 2-Iodobenzonitrile
作者:M. Ya. Demakova、R. M. Islamova、V. V. Suslonov
DOI:10.1134/s1070363219040054
日期:2019.4
4-Substituted O-benzyl benzamide oximes reacted with 2-iodobenzonitrile in the presence of 0.1 mol % of [Pd2(dba)3], 0.2 mol % of XantPhos, and 1.5 equiv of Cs2CO3 in dioxane under argon to give 2-arylquinazolin-4-amines. The described reaction is a new type of cascade processes, which affords 4-amino-quinazoline derivatives without using highly reactive chlorinating agents.
在氩气下,在二恶烷中0.1摩尔%[Pd 2(dba)3 ],0.2摩尔%XantPhos和1.5摩尔当量Cs 2 CO 3的存在下,4-取代的O-苄基苯甲酰胺肟与2-碘苄腈反应2-芳基喹唑啉-4-胺。所描述的反应是一种新型的级联方法,其无需使用高反应性氯化剂即可得到4-氨基-喹唑啉衍生物。