Nickel‐Catalyzed Tandem Reaction of Functionalized Arylacetonitriles with Arylboronic Acids in 2‐MeTHF: Eco‐Friendly Synthesis of Aminoisoquinolines and Isoquinolones
example of the nickel-catalyzed tandem addition/cyclization of 2-(cyanomethyl)benzonitriles with arylboronic acids in 2-MeTHF has been developed, which provides the facile synthesis of aminoisoquinolines with good functional group tolerance under mild conditions. This chemistry has also been successfully applied to the synthesis of isoquinolones by the tandemreaction of methyl 2-(cyanomethyl)benzoates
Me<sub>3</sub>Al-mediated domino nucleophilic addition/intramolecular cyclisation of 2-(2-oxo-2-phenylethyl)benzonitriles with amines; a convenient approach for the synthesis of substituted 1-aminoisoquinolines
作者:Krishna M S Adusumalli、Lakshmi N S Konidena、Hima B Gandham、Krishnaiah Kumari、Krishna R Valluru、Satya K R Nidasanametla、Venkateswara R Battula、Hari K Namballa
DOI:10.3762/bjoc.17.186
日期:——
amines in the presence of Me3Al. The reaction proceeds via a domino nucleophilic addition with subsequent intramolecular cyclisation. This method provides a wide variety of substituted 1-aminoisoquinolines with good functional group tolerance. Furthermore, the synthetic utility of this protocol was demonstrated in the successful synthesis of the antitumor agent CWJ-a-5 in gram scale.
通过在 Me 3 Al存在下用胺处理 2-(2-oxo-2-苯乙基) 苄腈,实现了一种用于构建 1-氨基异喹啉的简单有效的方案。该反应通过多米诺亲核加成和随后的分子内环化进行。该方法提供了多种具有良好官能团耐受性的取代 1-氨基异喹啉。此外,该协议的合成效用在克级抗肿瘤剂 CWJ-a-5 的成功合成中得到了证明。
Synthesis of 1-Aminoisoquinolines by Gold(III)-Mediated Domino Reactions from 2-Alkynylbenzamides and Ammonium Acetate
作者:Yuhua Long、Zhigang She、Xiaochen Liu、Yu Chen
DOI:10.1021/jo302794z
日期:2013.3.15
1-aminoisoquinoline derivatives by gold(III)-mediated domino reactions is described. This synthetic protocol starts from readily available 2-alkynylbenzamides and ammonium acetate and takes place under mild reaction conditions compatible with a variety of functional groups. A plausible mechanism for the dominoprocess is proposed, supported by the reaction of a possible intermediate, N-(3-phenyl-1H-isochrom
CONJUGATED HETEROCUMULENES. SYNTHESIS OF C=C-CONJUGATED CARBODIIMIDES BY A WITTIG-TYPE REACTION OF IMINOPHOSPHORANES WITH ISOCYANATES AND THEIR CYCLOADDITIONS
A Wittig-type reaction of N-(1,2-diarylethenyl)iminophosphoranes with isocyanates gave C=C-conjugatedcarbodiimides, which were utilized in the synthesis of heterocycles.
Facile synthesis of 1-aminoisoquinolines via the tandem reactions of 2-alkynylbenzaldoximes with isothiocyanates
作者:Wenhai Li、Yue Wang、Tao Lu
DOI:10.1016/j.tet.2012.06.030
日期:2012.8
1-aminoisoquinolines in good to excellent yields is described; this involves the reaction of 2-alkynylbenzaldoximes and isothiocyanates, which is catalyzed by silver triflate in dichloromethane, at room temperature. This transformation involves tandem 6-endo cyclization, [3+2] cycloaddition, and subsequent rearrangement. The simple operational protocol provides a cost-effective, diversity-oriented route to