[EN] GLUCOSYLCERAMIDE SYNTHASE INHIBITORS FOR THE TREATMENT OF DISEASES [FR] INHIBITEURS DE LA GLUCOSYLCÉRAMIDE SYNTHASE POUR LE TRAITEMENT DE MALADIES
[EN] GLUCOSYLCERAMIDE SYNTHASE INHIBITORS FOR THE TREATMENT OF DISEASES [FR] INHIBITEURS DE LA GLUCOSYLCÉRAMIDE SYNTHASE POUR LE TRAITEMENT DE MALADIES
Direct ethoxycarbonyldifluoromethylation of aromatic compounds using Fenton reagent
作者:Yuhki Ohtsuka、Tetsu Yamakawa
DOI:10.1016/j.tet.2011.01.049
日期:2011.3
Direct ethoxycarbonyldifluoromethylation of aromaticcompounds by BrCF2CO2Et was investigated using Fenton reagent in dimethylsulfoxide. Various five-membered hetero-aromatic compounds, benzene derivatives and uracil having ethoxycarbonyldifluoromethyl group were obtained catalytically with the combination of ferrocene and H2O2 at room temperature. The ethoxycarbonyldifluoromethylation occurred at
使用Fenton试剂在二甲亚砜中研究了BrCF 2 CO 2 Et对芳族化合物的直接乙氧基羰基二氟甲基化反应。在室温下,通过二茂铁和H 2 O 2的组合,催化获得具有乙氧基羰基二氟甲基的各种五元杂芳族化合物,苯衍生物和尿嘧啶。乙氧基羰基二氟甲基化发生在芳香族化合物亲电取代趋势预测的位置。当使用对位取代的苯胺衍生物作为底物时,通过在乙氧基羰基二氟甲基化反应中一锅合成3,3-二氟-2,3-二氢吲哚-2-酮衍生物。氨基的邻位和氨基与相邻的乙氧基羰基二氟甲基的连续分子内酰胺化。
Copper-Catalyzed C–H Difluoroalkylations and Perfluoroalkylations of Alkenes and (Hetero)arenes
作者:Xiaoyang Wang、Shuang Zhao、Jing Liu、Dingsheng Zhu、Minjie Guo、Xiangyang Tang、Guangwei Wang
DOI:10.1021/acs.orglett.7b01712
日期:2017.8.18
A general and facile syntheticmethod for C(sp2)–H difluoroalkylations and perfluoroalkylations of alkenes and (hetero)arenes with commercially available fluoroalkyl halides has been developed with a copper-amine catalyst system. This method is characterized by high yields, mild reaction conditions, low-cost catalyst, broad substrate scope, and excellent functional group compatibility, therefore providing
Direct Introduction of Ethoxycarbonyldifluoromethyl-Group to Heteroarenes with Ethyl Bromodifluoroacetate via Visible-Light Photocatalysis
作者:Qingyu Lin、Lingling Chu、Feng-Ling Qing
DOI:10.1002/cjoc.201300411
日期:2013.7
A mild and versatile approach for the directintroduction of ethoxycarbonyldifluoromethyl‐group to heteroarenesvia visible‐light photocatalysis has been developed. The new photoredox protocol has enabled the difluoromethylenation of heteroarenes containing a wide range of common functional groups under mild conditions.
Blue Light Induced Difluoroalkylation of Alkynes and Alkenes
作者:Kangkui Li、Xuexin Zhang、Jingchao Chen、Yang Gao、Chunhui Yang、Keyang Zhang、Yongyun Zhou、Baomin Fan
DOI:10.1021/acs.orglett.9b03855
日期:2019.12.20
The difluoroalkylation of alkynes and alkenes by direct photoexcitation of ethyl difluoroiodoacetate is described. Under catalyst- and oxidant-free conditions, iododifluoroalkylation and hydrodifluoroalkylation products were generated from alkynes, and difluoroalkylation products were prepared from alkenes. This methodology provides a streamlined access to difluoroalkylated organic compounds starting