Silver-promoted (radio)fluorination of unsaturated carbamates via a radical process
作者:Bin Yang、Kantapat Chansaenpak、Hongmiao Wu、Lin Zhu、Mengzhe Wang、Zibo Li、Hongjian Lu
DOI:10.1039/c7cc01393k
日期:——
The intramolecular fluorocyclization of unsaturated carbamates proceeds via a cyclization/1,2-(hetero)aryl migration/fluorination cascade involving an unusual radical process, and provides a straightforward access to (radio)fluorinated oxazolidin-2-ones, oxazolidine-2,4-diones and 1,3-oxazinan-2-ones.
Metal-free oxidative radical cascade addition/oxobutylation of unactivated alkenes with acetone towards 3-(3-oxobutyl)indolines
作者:Changduo Pan、Zhenkun Yang、Du Gao、Jin-Tao Yu
DOI:10.1039/c8ob01329b
日期:——
A direct oxobutylation of N-allyl anilines with acetone was developed under metal-free and acid-free conditions. This reaction tolerates a series of functional groups to provide 3-(3-oxobutyl) functionalized indolines in moderate to good yields.
作者:Hongmiao Wu、Bin Yang、Lin Zhu、Ronghua Lu、Guigen Li、Hongjian Lu
DOI:10.1021/acs.orglett.6b02706
日期:2016.11.18
An oxy-palladation, formal Wagner–Meerwein rearrangement and fluorination cascade has been established for generating fluorinated oxazolidine-2,4-diones and oxazolidin-2-ones. The reaction has a broad substrate scope in which both aryl and alkyl groups can be utilized as efficient migrating groups. Experimental evidence suggests that the reaction is initiated by anti-oxy-palladation of the olefin,
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。