FIELD: chemistry.
SUBSTANCE: invention relates to organic chemistry and specifically to a method of producing methyl ether of 4-(4-aminophenyl)butyric acid from 3-(4-acetylaminobenzoyl)propionic acid. The disclosed method comprises the following steps: catalytic reduction of a starting compound with hydrogen under pressure on a Pd/C catalyst, etherification and deacetylation of the reduced acid, while performing all of said steps in methanol. Reduction is carried out in pure methanol at 65-70°C, and the etherification and deacetylation steps are carried out in a mixture of methanol and thionyl choride.
EFFECT: method enables to avoid the use of gaseous hydrogen chloride at the catalytic reduction step and enables to extract the product in solid form.
4 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD OF PREPARING 2-(P-AMINOPHENYL)-6-AMINO-4H-3,1-BENZOXAZINONE-4 | 1999 |
|
RU2161611C1 |
METHOD TO PRODUCE 3, 4-BIS(3-AMINOFURAZAN-4-YL)-FURAZAN AND ITS N, N'-DIACYL DERIVATIVES | 2012 |
|
RU2489428C1 |
METHOD OF PRODUCING R-BETA-AMINOPHENYL-BUTYRIC ACID DERIVATIVES | 2009 |
|
RU2494090C2 |
METHOD OF OBTAINING PENTAERYTHRITE TRICHLOROHYDRIN | 2012 |
|
RU2510629C1 |
PROCESS FOR PREPARING 2-( 4′-ISOBUTYLPHENYL) PROPIONIC ACID (IBUPROPHENE) OR ITS VERSIONS | 1988 |
|
RU2005715C1 |
METHOD FOR PREPARING 5-AMINOLEVULINIC ACID ALKYL ESTER HYDROCHLORIDES | 2004 |
|
RU2270189C1 |
DERIVATIVES OF 4,5,6,7-TETRAHYDROBENZIMIDAZOLE | 1991 |
|
RU2033414C1 |
METHOD OF PRODUCING LENALIDOMIDE AND AN INTERMEDIATE FOR PRODUCTION THEREOF | 2020 |
|
RU2730858C1 |
METHOD OF PRODUCING ESTERS OF N-ACYL-N-ARYL-ALHA-AMINO ACIDS | 0 |
|
SU1447814A1 |
METHOD OF PREPARING HYDRAZINOPYRIDAZINES | 0 |
|
SU799661A3 |
Authors
Dates
2015-11-10—Published
2014-10-13—Filed