Iron-promoted free radical cascade difunctionalization of unsaturated benzamides with silanes
作者:Yaxin Ge、Yunfei Tian、Jilai Wu、Qinqin Yan、Luping Zheng、Yingming Ren、Jincan Zhao、Zejiang Li
DOI:10.1039/d0cc05213b
日期:——
Iron salt/peroxide promoted cascade difunctionalization of unsaturated benzamides with silanes has been reported. It provides a convenient, highly selective, and efficient protocol for the synthesis of various silylated dihydroisoquinolinones and 1,3-isoquinolinediones. In particular, the present methodology only gives cyclization products in good isolated yields under the typical conditions.
Self-Catalyzed Phototandem Perfluoroalkylation/Cyclization of Unactivated Alkenes: Synthesis of Perfluoroalkyl-Substituted Quinazolinones
作者:Bin Sun、Panyi Huang、Zhiyang Yan、Xiayue Shi、Xiaoli Tang、Jin Yang、Can Jin
DOI:10.1021/acs.orglett.0c04225
日期:2021.2.5
visible-light-induced radical tandem trifluoromethylation/cyclization of unactivated alkenes with sodium perfluoroalkanesulfinates (Rf = CF3, C3F7, C4F9, C6F13, C8F17) under air atmosphere has been developed. A range of quinazolinones containing unactivated alkene moiety and sodium perfluoroalkanesulfinates were compatible with this transformation, leading to a variety of perfluoroalkyl-substituted quinazoline
在空气气氛下,用全氟烷烃亚磺酸钠(R f = CF 3,C 3 F 7,C 4 F 9,C 6 F 13,C 8 F 17)进行可见光诱导的未活化烯烃的自由基串联三氟甲基化/环化反应发达。一系列含有未活化烯烃部分的喹唑啉酮和全氟链烷磺酸钠与该转化相容,从而产生了各种全氟烷基取代的喹唑啉生物碱。值得注意的是,可以在没有任何金属催化剂,强氧化剂或外部光敏剂的情况下进行实验。
Visible-light-induced radical cyclization of <i>N</i>-allylbenzamides with CF<sub>3</sub>SO<sub>2</sub>Na to trifluoromethylated dihydroisoquinolinones in water at room temperature
作者:Long Zou、Pinhua Li、Bin Wang、Lei Wang
DOI:10.1039/c9gc00938h
日期:——
An efficient strategy for the preparation of trifluoromethylated dihydroisoquinolinones via visible-light induced radical cyclization of N-allylbenzamides with CF3SO2Na was developed.
Construction of 3,4-Dihydroisoquinolinones and Indanones via DTBP-Promoted Oxidative Coupling of <i>N</i>-Allylbenzamides with Aromatic Aldehydes
作者:Zhong-Qi Xu、Chao Wang、Lin Li、Lili Duan、Yue-Ming Li
DOI:10.1021/acs.joc.8b01242
日期:2018.9.7
A metal-freeoxidative tandem coupling of N-allylbenzamide with aryl aldehydes was realized. This method allowed the 1,2-difunctionalization of the C═C double bond in N-allylbenzamides through simultaneous formation of two C(sp2)–C(sp3) bonds. In the presence of DTBP, 4-substituted 3,4-dihydroisoquinolin-1(2H)-ones were obtained in satisfactory isolated yields. 3-Substituted indanones could also be
Novel hydroxylamine derivatives, production and use thereof
申请人:MEIJI SEIKA KABUSHIKI KAISHA
公开号:EP0103895A2
公开(公告)日:1984-03-28
Novel hydroxylamine derivatives, uses thereof in anthelmintic methods and compositions, and methods of production thereof are disclosed.The novel compounds are represented by the formula (A):
where: R° is hydrogen atom or a group of R1-CO- where R1 is hydrogen atom, a lower alkyl, a lower alkenyl, phenyl or a substituted phenyl; Ra is a lower alkyl, a lower alkenyl, or a lower alkynyl; and Rb is a lower alkenyl or a lower alkynyl, with a proviso that some of the combinations of Ro, Ra and Rb are excluded. The uses and the methods of production are directed to hydroxylamine derivatives of a broader scope.