Furylmethyl ketone

Ring contractions of pyran derivatives are occasionally valuable. The contraction of 3-halo-2-pyrones to 2-furoic acids under the influence of alkali has been studied and the conditions defined.58112113 The method is adaptable to the preparation of 3-furoic acid via furan-2,4-dicarboxylic acid58 and of 3,4,5-triphenylfuran-2-carboxylic acid.113 Another ring contraction involving halides is the conversion of 4-chloromethylpyrylium salts into furylmethyl ketones as indicated in Scheme 21.114 Pyridine oxides may be transformed with unexpected ease into furans through treatment with a thiol (Scheme 22).115... 

Elsholtzia argyi Lev. E. cristata Willd. E. feddei Lev. E. souliei Lev. E. splendens Nakai Xiang Xu (Aromatic madder) (whole plant) Essential oils, elsholtzia ketone, elsholtzianic acid, furylmethyl ketone, furylpropyl ketone, furylisobutyl ketone, furane, pinene, terpene.49 Stomachic, carminative, diuretic. 

Furanocoumarin Furanodiene Furanodienone Furostanol saponins Furylisobutyl ketone Furylmethyl ketone Furylpropyl ketone Fustin Galactan... 

In the pyrolysis of cellulose at low pressures it is postulated that initiation leads to the formation of an active cellulose , which decomposes by two competitive first-order reactions, one yielding volatiles and the other char plus a gaseous fraction. Rate constants for all three stages have been determined. The products of degradation in air have also been determined. Chlorodeoxycellulose pyrolyses to give 5-methyl-2-furaldehyde and 2-furylmethyl-ketone. ... 

Furyl methanal. See Furfural 2-Furylmethanethiol. See Furfuryl mercaptan (2-Furyl) methanol. See Furfuryl alcohol 2-Furylmethyl butanoate. See Furfuryl butyrate 2-Furyl methyl ketone. See 2-Acetylfuran... 

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