HMF and furfural: Promising platform molecules in rhodium-catalyzed carbonylation reactions for the synthesis of furfuryl esters and tertiary amides
A biomass involved rhodium-catalyzed carbonylative synthesis of furfuryl esters and tertiary amides has been developed. 5-Hydroxymethylfurfural (HMF) was used as both substrate and CO surrogate for the first time in a carbonylation reaction, and both alkyl and aryl iodides were tolerated well to afford the desired furfuryl esters in moderate to good yields. In addition, furfural was also utilized as a CO source for the synthesis of tertiary amides. A variety of tertiary amides were obtained in moderate to excellent yields with good functional groups compatibility. Notably, tertiary amines were used as the amine source through a C[sbnd]N bond cleavage pathway in the absence of additional oxidant.
Qi, Xinxin,Zhou, Rong,Ai, Han-Jun,Wu, Xiao-Feng
p. 215 - 221
(2019/11/25)
A STUDY ON THE TRANSITION STATE IN THE PHOTOOXYGENATIONS BY AROMATIC AMINE N-OXIDES
Oxygen-atom transfer process in the photolysis of aromatic amine N-oxides was suggested to involve the primary oxygen-atom elimination from N-oxides to give "oxene" followed by its reactions with the oxygen-acceptors.
Ogawa, Yuji,Iwasaki, Shigeo,Okuda, Shigenobu
p. 2277 - 2280
(2007/10/02)
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