已经描述了由容易获得的邻甲酰基-芳基酮和芳基/(杂)芳基甲胺有效和碱介导的一锅区域特异性合成结构上多样化的异喹啉和苯并[ h ]异喹啉。通过这种发达的化学方法很容易获得具有挑战性的3-炔基/烯基异喹啉和双异喹啉,它们可进一步用于各种有机转化。操作简便,高原子经济性,广泛的底物范围,官能团耐受性和对大规模合成的适用性是此开发方法的优势。
Regiospecific synthesis of functionalised 1,3-diarylisobenzofurans via palladium- and rhodium-catalysed reaction of boronic acids with o-acylbenzaldehydes under thermal or microwave activation
Variously substituted 1,3-diarylisobenzofurans have been regiospecifically prepared via palladium- and rhodium-catalysedreaction of functionalised boronicacids onto o-acylbenzaldehydes. Rhodium catalysis has furthermore been improved using microwave activation. Thus, isobenzofurans containing aryl groups substituted by halogens, unprotected amine, alcohol and even aldehyde groups, have been obtained
Iodine-Catalyzed Annulation Reaction of <i>Ortho</i>-Formylarylketones with Indoles: A General Strategy for the Synthesis of Indolylbenzo[<i>b</i>]carbazoles
作者:Sundaram Suresh、Veerababurao Kavala、Ching-Fa Yao
DOI:10.1021/acs.joc.2c02868
日期:2023.3.17
The iodine-catalyzed cascade reaction of ortho-formylarylketones with indoles for the synthesis of indolylbenzo[b]carbazoles is reported. The reaction is initiated in the presence of iodine by two successive nucleophilic additions of indoles with an aldehyde group of ortho-formylarylketones, and the ketone does not undergo a nucleophilic addition and only involves in the Friedel–Crafts-type cyclization
报道了邻甲酰基芳基酮与吲哚在碘催化下的级联反应合成吲哚基苯并[ b ]咔唑。该反应在碘存在下通过吲哚与邻甲酰基芳基酮的醛基的两次连续亲核加成引发,酮不进行亲核加成,仅参与 Friedel-Crafts 型环化。测试了多种底物,并通过克级反应证明了该反应的效率。
BF<sub>3</sub>-Etherate-catalyzed tandem reaction of 2-formylarylketones with electron-rich arenes/heteroarenes: an assembly of isobenzofurans
作者:Pawan K. Mishra、Ankit Kumar、Akhilesh K. Verma
DOI:10.1039/d0cc02760j
日期:——
An efficient and BF3·Et2O-catalyzed chemoselective synthesis of diversified 1,3-diarylisobenzofuran in a high yield has been described. The reaction proceeds through sequential hydroarylation–cyclization between 2-formylarylketones and electron-richarenes/heteroarenes. Advantageous features of the developed methodology include operational simplicity, a broad substrate scope, and applicability towards
Harnessing the reactivity of <i>ortho</i>-formyl-arylketones: base-promoted regiospecific synthesis of functionalized isoquinolines
作者:Pawan K. Mishra、Shalini Verma、Manoj Kumar、Ankit Kumar、Akhilesh K. Verma
DOI:10.1039/c9cc03689j
日期:——
An efficient and base-mediated one-pot regiospecificsynthesis of structurally diversified isoquinolines and benzo[h] isoquinolines from easily accessible ortho-formyl-arylketones and aryl/(het)arylmethanamines has been described. Challenging 3-alkynyl/alkenyl isoquinolines and bis-isoquinolines were easily attained through this developed chemistry, which can be further used for various organic transformations
已经描述了由容易获得的邻甲酰基-芳基酮和芳基/(杂)芳基甲胺有效和碱介导的一锅区域特异性合成结构上多样化的异喹啉和苯并[ h ]异喹啉。通过这种发达的化学方法很容易获得具有挑战性的3-炔基/烯基异喹啉和双异喹啉,它们可进一步用于各种有机转化。操作简便,高原子经济性,广泛的底物范围,官能团耐受性和对大规模合成的适用性是此开发方法的优势。