The production of amine intermediates from biomass is capturing increasing attention. Herein, a simple and efficient preparation of l furan‐derived amines was developed e.g., ...1‐(furan‐2‐yl)‐4‐methylpentan‐2‐amine with high yield (up to 95 %) from (E)‐1‐(furan‐2‐yl)‐5‐methylhex‐1‐en‐3‐one. The catalyst used was Ru/C, and it was recyclable up to the fourth cycle. To further realize cost‐efficiency, a one‐reactor tandem concept was attempted. To this aim direct reaction from furfural was investigated. A high yield (74 %) towards 1‐(furan‐2‐yl)‐4‐methylpentan‐2‐amine could be achieved starting directly from furfural in the presence of methyl isobutyl ketone, NH3, H2, and Ru/C catalyst.
Green amines: Catalytic conversion of furfural to primary amines is achieved with high yield (74 %) by a one‐reactor two‐step process in the presence of Amberlyst 16 and Ru/C based catalysts. The hydrogenation of C=C bonds together with the reductive amination of carbonyl groups at mild reaction conditions is performed using ammonia and hydrogen.
BRIEFS Sulfonated mesoposous carbons efficiently catalyze the glycosylation of various monosaccharides with alkyl alcohols.
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•Sulfonated mesoporous carbons exhibit high catalytic ...performances in the glycosylation of glucose with fatty alcohols.•Mesoporous channel improved the glycosylation rate of carbohydrates, thus limiting the side formation of humins.•Limiting the formation of humins concomitantly limit the deactivation rate of the catalyst which was successfully recycled.•Sulfonated mesoporous carbons was found applicable from different carbohydrates and different alkyl alcohols.•Space time yields of the Fischer glycosylation reactions are in line with the industrial requirements of the field.
Herein we investigated the catalytic performances of sulfonated mesoporous carbons in the glycosylation of carbohydrates with alkyl alcohols. Catalytic performances were compared to common solid acid catalysts previously reported for this reaction. Under optimized conditions, the targeted alkyl glycosides were obtained in 85% yield, together with a turn over frequency and a space time yield higher than those of the best heterogeneous catalysts reported so far in such reaction. Furthermore, the presence of mesoporous channels significantly lowered the deactivation rate of the catalyst in comparison to a non-porous sulfonated carbon.
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