Palladium-Catalyzed Oxidative Arylalkylation of Unactivated Alkenes: Dual C–H Bond Cleavage of Anilines and Acetonitrile
摘要:
A palladium-catalyzed oxidative arylalkylation of unactivated alkenes involving dual C-H bond cleavage of arene and acetonitrile was developed. This reaction was promoted by pyridine as a ligand, and the ratio of palladium to pyridine is vital for this transformation. A series of nitrile-containing indolines were efficiently provided in moderate to good yields.
Synthesis of cyanoalkyl indolines through cyanoalkylarylation of N-allyl anilines with alkyl nitriles under metal-free and neutral conditions
作者:Deqiang Liang、Xuemei Song、Lichun Xu、Yitong Sun、Ying Dong、Baoling Wang、Weili Li
DOI:10.1016/j.tet.2019.05.018
日期:2019.6
An α-C(sp3)−Hfunctionalization of alkylnitriles under metal-free and neutral conditions is presented. In the presence of di-tert-butyl peroxide (DTBP), N-allyl anilines underwent exo-selective cyanoalkylation/cyclization cascade, providing a direct access to 3-cyanoalkyl indolines. Previously, a transition-metal catalyst and/or a strong base were generally required to activate nitrilic α-C−H bonds
Heterogeneous photocatalytic cyanomethylarylation of alkenes with acetonitrile: synthesis of diverse nitrogenous heterocyclic compounds
作者:Guanglong Pan、Qian Yang、Wentao Wang、Yurong Tang、Yunfei Cai
DOI:10.3762/bjoc.17.89
日期:——
photocatalytic cyanomethylarylation of alkenes with acetonitrile has been established using K-modified carbon nitride (CN-K) as a recyclable semiconductor photocatalyst. This protocol, employing readily accessible alkyl N-hydroxyphthalimide (NHPI) ester as a radical initiator, allows the efficient construction of a broad array of structural diverse nitrogenous heterocyclic compounds including indolines, oxindoles
使用 K 改性氮化碳(CN-K)作为可回收半导体光催化剂,建立了可见光介导的烯烃与乙腈的异相光催化氰甲基芳基化反应。该方案采用易于获得的烷基N-羟基邻苯二甲酰亚胺 (NHPI) 酯作为自由基引发剂,可以有效构建多种结构多样的含氮杂环化合物,包括二氢吲哚、羟吲哚、异喹啉酮和异喹啉二酮。
Cascade arylalkylation of unactivated alkenes for the construction of cyanomethyl-substituted dihydroisoquinolinones and indolines
作者:Changduo Pan、Yun Wang、Chao Wu、Jin-Tao Yu
DOI:10.1016/j.catcom.2019.105802
日期:2019.11
ation of N-allylbenzamide with acetonitrile to form dihydroisoquinolinones was described. The direct functionalizations of the sp3 CH bond of acetonitrile and the sp2 CH bond of the phenyl ring were involved in this reaction. Cascade arylalkylation of N-allylanilines was also achieved under the same conditions to provide cyanomethylated indolines in good yields.