[EN] 1, 3, 4, 5-TETRAHYDRO-2H-PYRIDO[4,3-B]INDOLE DERIVATIVES FOR THE TREATMENT, ALLEVIATION OR PREVENTION OF DISORDERS ASSOCIATED WITH TAU AGGREGATES LIKE ALZHEIMER'S DISEASE [FR] DÉRIVÉS DE 1,3,4,5-TÉTRAHYDRO-2H-PYRIDO[4,3-B]INDOLE POUR LE TRAITEMENT, LE SOULAGEMENT OU LA PRÉVENTION DE TROUBLES ASSOCIÉS À DES AGRÉGATS DE TAU COMME LA MALADIE D'ALZHEIMER
[EN] TETRAHYDROBENZOFURO[2,3-C]PYRIDINE AND BETA-CARBOLINE COMPOUNDS FOR THE TREATMENT, ALLEVIATION OR PREVENTION OF DISORDERS ASSOCIATED WITH TAU AGGREGATES [FR] COMPOSÉS DE TÉTRAHYDROBENZOFURO[2,3-C]PYRIDINE ET DE BÊTA-CARBOLINE POUR LE TRAITEMENT, LE SOULAGEMENT OU LA PRÉVENTION DE TROUBLES ASSOCIÉS À DES AGRÉGATS DE PROTÉINE TAU
catalysis of copper, 2-aminophenols or 2-aminothiophenols reacted with thiocarbamoyl chlorides via a tandem manner, furnishing a series of 17 benzoheterocycles smoothly with good to excellent yields (70–91%). The broad substrate scope, short reaction time, mild react conditions, easy performance and nice yields make this approach attractive, showing its practical synthetic value for the preparation of some
ABSTRACT A simple and efficient protocol for the synthesis of 2-aminobenzothiazoles by a ligand-free copper-catalyzed tandemreaction has been developed. In the presence of CuBr and t-BuOK, a variety of 2-haloanilines (halogen = Br, I) underwent the reaction with thiocarbamoyl chloride efficiently to afford the corresponding 2-aminobenzothiazoles in good yields (83–94%). The features of this method
A series of 2-aminobenzothiazoles were synthesized by using 2-halogen-substituted anilines (halogen = Cl, Br, I) and dithiocarbamates in the presence of KOt-Bu. This simple and efficient protocol lets the reactions undergo in a smooth and rapid way to afford the corresponding 2-aminobenzothiazoles in good yields. It is noteworthy that the present process allows the construction of 2-aminobenzothiazoles
A simple and efficient protocol for the synthesis of 2-aminobenzothiazole derivatives is described. 2-Chloroanilines were treated with thiocarbamoyl chloride in the presence of Pd(dba)2 and t-BuOK to afford the corresponding 2-aminobenzothiazoles in good to excellent yield via a tandem manner.
Palladium-Catalyzed Synthesis of 2-Aminobenzothiazoles through Tandem Reaction
作者:Zhi-Bing Dong、Wan Xu、Meng-Tian Zeng、Min Liu、Sha-Sha Liu、Yue-Sheng Li
DOI:10.1055/s-0036-1588835
日期:2017.7
through a tandem approach in the presence of Pd(PPh3)4 and t-BuOK. The facile and efficient protocol enabled the reaction to proceed at a good rate with excellent yields. A variety of 2-aminobenzothiazoles were synthesized by using 2-chloroanilines and dithiocarbamates through a tandem approach in the presence of Pd(PPh3)4 and t-BuOK. The facile and efficient protocol enabled the reaction to proceed