GB318582A - Process for the manufacture of ª‰-aryl-ª‡-aminopropionic acids and their substitution products - Google Patents

Process for the manufacture of ª‰-aryl-ª‡-aminopropionic acids and their substitution products

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Publication number
GB318582A
GB318582A GB6934/29A GB693429A GB318582A GB 318582 A GB318582 A GB 318582A GB 6934/29 A GB6934/29 A GB 6934/29A GB 693429 A GB693429 A GB 693429A GB 318582 A GB318582 A GB 318582A
Authority
GB
United Kingdom
Prior art keywords
aryl
acid
heating
substitution products
manufacture
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
Application number
GB6934/29A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of GB318582A publication Critical patent/GB318582A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

318,582. Hoffmann-La Roche &. Co., Akt.-Ges., F. Sept. 6, 1928, [Convention date]. #-Aryl-alpha-aminopropionic acids and their substitution products are prepared by heating the corresponding azlactones (lactimides) with hydriodic acid, to which acetic anhydride and red phosphorus may be added if desired. According to the examples, (1) phenylalanine is obtained by heating with hydriodic acid the azlactone resulting from the condensation of benzaldehyde with hippuric acid; (2) #-[3: 5-diiodo-4-(4<1>-oxyphenoxy)-phenyl]-alpha-aminopropionic acid is prepared by heating 4-[3<1> : 5<1>-diiodo-4<1>(4<11>-methoxyphenoxy)-benzylidene]-2-phenyl-5-oxazolone with hydriodic acid, acetic anhydride and red phosphorus ; the product may be converted by iodination into thyroxine.
GB6934/29A 1928-09-06 1929-03-04 Process for the manufacture of ª‰-aryl-ª‡-aminopropionic acids and their substitution products Expired GB318582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE318582X 1928-09-06

Publications (1)

Publication Number Publication Date
GB318582A true GB318582A (en) 1929-10-03

Family

ID=6151077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6934/29A Expired GB318582A (en) 1928-09-06 1929-03-04 Process for the manufacture of ª‰-aryl-ª‡-aminopropionic acids and their substitution products

Country Status (1)

Country Link
GB (1) GB318582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483530A (en) * 1946-08-14 1949-10-04 Merck & Co Inc Beta-ethoxy-alpha-phenylacet-amidoacrylic acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483530A (en) * 1946-08-14 1949-10-04 Merck & Co Inc Beta-ethoxy-alpha-phenylacet-amidoacrylic acid

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