[EN] DIHYDROOXAZINE OR OXAZEPINE DERIVATIVES HAVING BACE1 INHIBITORY ACTIVITY [FR] DÉRIVÉS DE DIHYDROOXAZINE OU D'OXAZÉPINE AYANT UNE ACTIVITÉ INHIBITRICE DE BACE1
[EN] DIHYDROOXAZINE OR OXAZEPINE DERIVATIVES HAVING BACE1 INHIBITORY ACTIVITY [FR] DÉRIVÉS DE DIHYDROOXAZINE OU D'OXAZÉPINE AYANT UNE ACTIVITÉ INHIBITRICE DE BACE1
A transition-metal-free synthetic method of various ynones via decarboxylative alkynylation of α-keto acids is described. The reaction is carried out undermildconditions and exhibits remarkable tolerance of functional groups. The mechanism of a radical process is proposed in the reaction.
Decarboxylative Alkynylation of α-Keto Acids and Oxamic Acids in Aqueous Media
作者:Hua Wang、Li−Na Guo、Shun Wang、Xin-Hua Duan
DOI:10.1021/acs.orglett.5b01336
日期:2015.6.19
K2S2O8 promoted decarboxylativealkynylation of α-ketoacids and oxamic acids has been developed. This process features mild reaction conditions, a broad substrate scope, and good functional-group tolerance, therefore providing a new and efficient access to a wide range of ynones and propiolamides. Furthermore, this radical process could also be successfully applied to alkynylation of the Csp2–H bond
已经开发出温和的K 2 S 2 O 8促进α-酮酸和草酰胺酸的脱羧炔基化。该工艺具有温和的反应条件,广泛的底物范围和良好的官能团耐受性,因此提供了一种新型且有效的途径,可广泛使用炔酮和丙酰胺类化合物。此外,该自由基过程也可以成功地用于高价炔碘试剂对DMF中C sp 2 -H键的炔基化反应。