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US4351954A
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US
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Halogenated α-amino acids
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1981-08-03
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Granted: 1982-09-28
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Expires: 2001-08-03
Abstract
Abstract Halogenated α-amino acids as new compounds are obtained by subjecting halogenated ethanes and an ester of acrylic acid or crotonic acid to addition reaction, adding sodium azide to the adducts, reducing the resultant mixtures with hydrogen and subsequently hydrolyzing the reduction products.
Inventors
- 👤 Hiroshige Muramatsu
- 👤 Teruo Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:34
CPC Classifications
C; C07; C07C; C07C247/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A halogenated α-amino acid represented by the general formula: ##STR10## wherein, X is one member selected from the group consisting of Cl and Br, X' is one member selected from the group consisting of F, Cl and H, and R is one member selected from the group consisting of H and CH 3 .
Claim 2
Dependent Claim
54 words
A halogenated α-amino acid represented by the general formula: ##STR10## wherein, X is one member selected from the group consisting of Cl and Br, X' is one member selected from the group consisting of F, Cl and H, and R is one member selected from the group consisting of H and CH 3 .
References Cited (Backward Citations)
DE2742686A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |