Rhodium(III)-Catalyzed Direct Cyanation of Aromatic C–H Bond to Form 2-(Alkylamino)benzonitriles Using <i>N</i>-Nitroso As Directing Group
作者:Jiawei Dong、Zhongjie Wu、Zhengyi Liu、Ping Liu、Peipei Sun
DOI:10.1021/acs.joc.5b01666
日期:2015.12.18
2-(Alkylamino)benzonitriles were synthesized via a rhodium-catalyzed cyanation on the aryl C–H bond and subsequent denitrosation of N-nitrosoarylamines using a removable nitroso as the directing group, in which N-cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS) was used as the “CN” source. Various substituents on the aryl ring and amino group of N-nitrosoarylamines tolerated the reaction, and the corresponding
An efficient synthesis of quinazolines based on an iron-catalyzed C(sp3)-H oxidation and intramolecular C–N bondformationusing tert-BuOOH as the terminal oxidant is described. The reaction of readily available 2-alkylamino benzonitriles with various organometallic reagents led to 2-alkylamino N–H ketimine species. The FeCl2-catalyzed C(sp3)-H oxidation of the alkyl group employing tert-BuOOH followed
(EN) The present invention relates to heterocyclic Compounds having antiviral activity. In particular, Compounds of formula (I), wherein B, W, X, Y, Q, R1, R2, R3, R4 and n are as defined herein, are useful in the therapy and prophylaxis of viral infection in mammals.(FR) L'invention concerne des composés hétérocycliques présentant une activité antivirale, en particulier les composés de formule (I): dans laquelle B, W, Y, Q, R1, R2, R3, R4 et n sont tels que décrits. Ces composés sont utiles dans le traitement et dans la prophylaxie des infections virales chez les mammifères.