On the Ring-opening Reactions of the Furan Compounds. IV. The Condensation Products of Furfural with Methyl Propyl Ketone, Methyl Isopropyl Ketone and Pinacolin by Alkali
作者:Hiroshi Midorikawa
DOI:10.1246/bcsj.27.143
日期:1954.3
Methylpropylketone condensed with furfural by alkali both at the α-methyl and α-methylene groups of the ketone, giving 1-(2-furyl)-1-hexen-3-one (I) in a larger proportion and 3-ethyl-4-(2-furyl)-3-buten-2-one (II) in a much smaller proportion. The former furfurylidene ketone (I) gave γ, ζ-dioxocapric acid (III) on the ring-opening in alcoholic hydrochloric acid, and the latter (II) was oxidized
A thiophene, furan or tetrahydrofuran triazolyl derivative having the general formula (I) or (II) :
and stereoisomers thereof, wherein R¹ is tertiary butyl, which may be optionally substituted with one or more halogen atoms; R² is the group :
-(CH₂)n-Z
or -CH=CH-X
or -C≡C-Z
where n is an integer from 0 to 3 and Z is an optionally substituted thiophene, furan, or tetrahydrofuran ring; and X is an optionally substituted thiophene or tetrahydrofuran ring; and R³ is hydrogen or an alkyl group containing from 1 to 4 carbon atoms; and salts, esters and metal complexes of the compound of formula (I) and (II) wherein R³ is hydrogen.