Ruthenium-Catalyzed Rearrangement of Aldoximes to Primary Amides in Water
作者:Rocío García-Álvarez、Alba E. Díaz-Álvarez、Javier Borge、Pascale Crochet、Victorio Cadierno
DOI:10.1021/om3006917
日期:2012.9.10
The rearrangement of aldoximes to primaryamides has been studied using the readily available arene-ruthenium(II) complex [RuCl2(η6-C6Me6)P(NMe2)3}] (5 mol %) as catalyst. Reactions proceeded cleanly in pure water at 100 °C without the assistance of any cocatalyst, affording the desired amides in high yields (70–90%) after short reaction times (1–7 h). The process was operative with both aromatic
Hydroxyapatite-supported silver nanoparticles (AgHAP) acted as a highly efficient reusable heterogeneous catalyst for hydration of diverse nitriles, including heteroaromatic ones, into amides in water.
The invention provides a compound of formula I:
wherein R
1
-R
6
, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of MAO-B enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.
Highly efficient synthesis of primary amides <i>via</i> aldoximes rearrangement in water under air atmosphere catalyzed by an ionic ruthenium pincer complex
作者:Fa-Liu Yang、Xinju Zhu、Dun-Kang Rao、Xiao-Niu Cao、Ke Li、Yan Xu、Xin-Qi Hao、Mao-Ping Song
DOI:10.1039/c6ra07515k
日期:——
aldoximes to primary amides has been evaluated using pincer ruthenium complexes a–c, among which the ionic Ru catalyst a proved to be the most efficient in water under air atmosphere. A variety of (hetero)arene aldoximes proceeded smoothly to afford amides in high yields with good functional group compatibilities. Furthermore, a direct syntheticroute of amides from aldehydes, hydroxylamine hydrochloride