One Pot Synthesis of Furyl α-Bromoketones from Furyl Ketones Using the A-162 Br3-Resin/CH3NO2 System
摘要:
Furyl ketones are brominated in a single - step reaction using the A-162 Br3/CH3NO2 system Furyl alpha-bromoketones are obtained with good yield and high selectivity .
Transition-Metal-Free Formal Sonogashira Coupling and α-Carbonyl Arylation Reactions
作者:Birgit Prüger、Gretchen E. Hofmeister、Christian Borch Jacobsen、David G. Alberg、Martin Nielsen、Karl Anker Jørgensen
DOI:10.1002/chem.200902911
日期:2010.3.22
Sonogashira coupling and α‐carbonyl arylation reactions have been developed. These transformations are based on the nucleophilic aromatic substitution (SNAr) of β‐carbonyl sulfones to electron‐deficient aryl fluorides, producing a key intermediate that, depending on the reaction conditions, gives the aromatic alkynes or α‐aryl carbonyl compounds. The development of these reactions is presented and, based
A general and convenient method for the synthesis of 2,4-dinitrobenzyl ketones. Almost unlimited access to 2-substituted 6-nitroindoles from 2,4-dinitrotoluene and aldehydes
presence of catalytic amounts of DBU with aldehydes to form the corresponding alcohols in good yields (usually above 65%). The obtained alcohols can be readily oxidized to 2,4-dinitrobenzyl ketones, which were used for the synthesis of 6-nitroindoles with various substituents in the 2-position. Starting from non-racemic aldehydes, non-racemic 2-substituted 6-nitroindoles were obtained.
Furyl ketones are brominated in a single - step reaction using the A-162 Br3/CH3NO2 system Furyl alpha-bromoketones are obtained with good yield and high selectivity .