31-01-2019 дата публикации
Номер: US20190031579A1
Принадлежит:
A method for producing alkyl substituted benzene includes (a) providing a starting material selecting from the group consisting of furan, an alkyl substituted furan, 2-methylfuran, 2,3-dimethylfuran, 2,4-dimethylfuran, 2,5-dimethylfuran, 2,5-hexanedione, and combinations thereof, and (b) subjecting the starting material to a cycloaddition reaction with a monoene in the absence of solvent and in the presence of the metal triflate catalyst to produce an alkyl substituted benzene. 1. A method for producing alkyl substituted benzene , comprising the steps of:(a) providing a starting material selecting from the group consisting of furan, an alkyl substituted furan, 2-methylfuran, 2,3-dimethylfuran, 2,4-dimethylfuran, 2,5-dimethylfuran, 2,5-hexanedione, and combinations thereof; and(b) subjecting the starting material to a cycloaddition reaction with a monoene in the absence of solvent and in the presence of the metal triflate catalyst to produce an alkyl substituted benzene.2. The method according to claim 1 , wherein the metal trilflate catalyst is selected from the group consisting of copper (II) trifluoromethanesulfonate claim 1 , zinc trifluoromethanesulfonate claim 1 , scandium trifluoromethanesulfonate claim 1 , yttrium trifluoromethanesulfonate claim 1 , yttrium trifluoromethanesulfonate hydrate claim 1 , indium(III) trifluoromethanesulfonate claim 1 , and combinations thereof.3. The method according to claim 2 , wherein claim 2 , instep (d) claim 2 , a molar ratio of the metal triflate catalylst to the starting material ranging from 1:50 to 1:100000.4. The method according to claim 3 , wherein claim 3 , instep (d) claim 3 , a molar ratio of the metal triflate catalylst to the starting material ranging from 1:5000 to 1:30000.5. The method according to claim 1 , wherein the monoene is selected from the group consisting of ethylene claim 1 , propene claim 1 , 1-hexene claim 1 , cyclohexene claim 1 , and combinations thereof.6. The method according to claim 1 , ...
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