FIELD: pharmaceuticals.
SUBSTANCE: invention relates to a method of producing m-dialkylbenzaldehyde represented by formula (3). This method includes the step of reaction of carbon monoxide with a feedstock containing 1,4-dialkylbenzene represented by formula (1) in the presence of a Bronsted acid and a Lewis acid. The starting raw material is either 1,4-dialkylbenzene, represented by formula (1), or a mixture of 1,4-dialkylbenzene, represented by formula (1), and 1,3-dialkylbenzene, represented by formula (2) containing 10 mol. % or more of 1,4-dialkylbenzene represented by formula (1).
In formulas (1) to (3), R1 represents a methyl group or ethyl group, and R2 represents either an acyclic or cyclic alkyl group having 3 or more and 6 or less carbon atoms, which has a tertiary carbon at the benzyl position.
EFFECT: production of m-dialkylbenzaldehyde using a reaction starting material containing 1,4-dialkylbenzene.
10 cl, 3 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING 2,4-DIALKYLBENZALDEHYDE | 2020 |
|
RU2824597C1 |
| 4-(4-ALKYLCYCLOHEXYL)BENZALDEHYDE | 2007 |
|
RU2446141C2 |
| LIQUID-PHASE OLEFIN ALKYLATION PROCESS | 1993 |
|
RU2138471C1 |
| METHOD OF PRODUCING 2,6-DIMETHYL-1-NAPHTHALDEHYDE | 2007 |
|
RU2440967C2 |
| METHOD FOR OBTAINING 4,4'-DIFORMYLDIPHENYLALKANE | 2012 |
|
RU2575126C2 |
| TRIALKYLPHOSPHONIUM IONIC FLUIDS, METHODS FOR OBTAINING AND METHODS FOR ALKYLATION WITH USE OF TRIALKYLPHOSPHONIUM IONIC FLUIDS | 2017 |
|
RU2675845C1 |
| COMPOUND OF A CARBOXIC ACID ETHER, METHOD FOR ITS PRODUCTION AND FLAVORING COMPOSITION | 2019 |
|
RU2795926C2 |
| METHOD OF ALLOCATION OF PERFLUOROBENZENE FROM BENZENE-PERFLUOROBENZENE BIASETROPIC MIXTURE | 2016 |
|
RU2618534C1 |
| NEW ESTER COMPOUND OF ALICYCLIC DICARBOXYLIC ACID AND METHOD OF ITS PRODUCTION | 2013 |
|
RU2642069C2 |
| METHOD OF OBTAINING ALICYCLIC ALCOHOL | 2010 |
|
RU2530880C2 |
