Favorskii-Like Rearrangement of an Aliphatic α-Halo Amide
摘要:
The reaction of the -bromoamide 2a with 1-cyclopentylpiperazine gives the Favorskii-like rearranged product 4 when the reaction is heated to 70 degrees C in a mixture of aqueous potassium hydroxide and ethanol. However, when solid sodium carbonate/potassium iodide is used in ethanol, the nonrearranged product 3a is formed instead. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
Transition-Metal-Free Coupling of Alkynes with α-Bromo Carbonyl Compounds: An Efficient Approach towards β,γ-Alkynoates and Allenoates
作者:Wenbo Liu、Zhengwang Chen、Lu Li、Haining Wang、Chao-Jun Li
DOI:10.1002/chem.201600219
日期:2016.4.18
A direct transition‐metal‐free coupling between alkynes and α‐bromo carbonyl compounds has been developed with ultraviolet (UV) light in aqueous media. This method represents a facile approach to synthetically useful β,γ‐alkynyl esters and amides stereoselectively from two readily available starting materials. As an example of the synthetic application of the products, the alkynyl esters were readily
[EN] AMINOALKAMIDES FOR USE IN THE TREATMENT OF INFLAMMATORY, DEGENERATIVE OR DEMYELINATING DISEASES OF THE CNS<br/>[FR] AMINOALCAMIDES POUR UNE UTILISATION DANS LE TRAITEMENT DE MALADIES INFLAMMATOIRES, DÉGÉNÉRATIVES OU DÉMYÉLINISANTES DU SYSTÈME NERVEUX CENTRAL