ES328220A2 - Procedure for the manufacture of l - (-) - alpha-methyl-beta3,4-dihydroxypenyl) -alanin. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the manufacture of l - (-) - alpha-methyl-beta3,4-dihydroxypenyl) -alanin. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES328220A2 ES328220A2 ES0328220A ES328220A ES328220A2 ES 328220 A2 ES328220 A2 ES 328220A2 ES 0328220 A ES0328220 A ES 0328220A ES 328220 A ES328220 A ES 328220A ES 328220 A2 ES328220 A2 ES 328220A2
- Authority
- ES
- Spain
- Prior art keywords
- methyl
- translation
- procedure
- manufacture
- machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Improvements introduced in the object of the main patent No. 316,093 on procedure for the manufacture of L - (-) - α -methyl- β-( 3,4-dihydroxyphenyl) -alanine, in which it is reacted 3,4 -dimethoxy-phenylacetone with an alkaline cyanide and benzylamine, the α -benzylamino- α-( 3,4-dimethoxybenzyl) -propionitrile obtained is subjected to a racemate dissociation, the L isomer is separated, and the D isomer remaining in the mother liquor it is racemized in an alkaline medium to the benzylaminonitrile D, L state, which can again go back to the racemate dissociation phase, after which the L - (+) - α -benzylamino- α - (3,4-dimethoxy-benzyl) -propionitrile is stepwise transferred to the L - (-) - α -methyl- β-( 3,4-dihydroxyphenyl) -alanine by acid or alkaline saponification while by hydrogenation catalytic, characterized in that optically active α -methyl-benzylamine is used instead of benzylamine, and L - (-) - α-( 3,4-dimethoxyibe ncil) -N- α -methyl-benzylamino-propionitrile obtained is subjected directly to a stepped saponification and catalytic hydrogenation. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB0082530 | 1965-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES328220A2 true ES328220A2 (en) | 1967-04-01 |
Family
ID=6981537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0328220A Expired ES328220A2 (en) | 1965-06-23 | 1966-06-21 | Procedure for the manufacture of l - (-) - alpha-methyl-beta3,4-dihydroxypenyl) -alanin. (Machine-translation by Google Translate, not legally binding) |
Country Status (12)
| Country | Link |
|---|---|
| AT (1) | AT266094B (en) |
| BE (1) | BE682958A (en) |
| CH (1) | CH490334A (en) |
| DE (1) | DE1493484C3 (en) |
| DK (1) | DK111449C (en) |
| ES (1) | ES328220A2 (en) |
| FI (1) | FI44006C (en) |
| FR (1) | FR91409E (en) |
| GB (1) | GB1078445A (en) |
| LU (1) | LU51385A1 (en) |
| NL (1) | NL6608715A (en) |
| SE (1) | SE345444B (en) |
-
0
- FR FR91409D patent/FR91409E/fr not_active Expired
-
1965
- 1965-06-23 DE DE19651493484 patent/DE1493484C3/en not_active Expired
-
1966
- 1966-05-04 DK DK228866A patent/DK111449C/en active
- 1966-06-20 CH CH888666A patent/CH490334A/en unknown
- 1966-06-20 FI FI164266A patent/FI44006C/en active
- 1966-06-21 ES ES0328220A patent/ES328220A2/en not_active Expired
- 1966-06-21 GB GB2760766A patent/GB1078445A/en not_active Expired
- 1966-06-22 SE SE853566A patent/SE345444B/xx unknown
- 1966-06-22 BE BE682958D patent/BE682958A/xx unknown
- 1966-06-22 AT AT595066A patent/AT266094B/en active
- 1966-06-22 LU LU51385A patent/LU51385A1/xx unknown
- 1966-06-23 NL NL6608715A patent/NL6608715A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE345444B (en) | 1972-05-29 |
| LU51385A1 (en) | 1966-08-22 |
| FI44006B (en) | 1971-04-30 |
| NL6608715A (en) | 1966-12-27 |
| DE1493484B2 (en) | 1973-06-14 |
| DE1493484C3 (en) | 1974-01-24 |
| CH490334A (en) | 1970-05-15 |
| GB1078445A (en) | 1967-08-09 |
| FI44006C (en) | 1971-08-10 |
| FR91409E (en) | 1968-11-08 |
| BE682958A (en) | 1966-12-22 |
| DE1493484A1 (en) | 1969-04-17 |
| DK111449B (en) | 1968-08-26 |
| DK111449C (en) | 1981-11-02 |
| AT266094B (en) | 1968-11-11 |
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