Claims
- 1. The 2-amino acid amide represented by the formula 5 or the Schiff base thereof represented by the formula 6, wherein n equals 0, 1, 2, 3 or 4; R1 and R2 each independently represent an alkyl group with 1-10 carbon atoms or form a ring with 3 or 4 carbon atoms together with the oxygen atoms to which they are bound and the carbon atom to which the oxygen atoms are bound; and 1-4 Ri groups, each of which is independently selected from the group consisting of halogen, nitro, an alkyl group and alkoxy group with 1-4 carbon atoms.
- 2. An optically active compound according to claim 1 wherein the optically active compound has an e.e. of >95%.
- 3. An optically active compound according to claim 2, wherein the e.e. is greater than 98%.
- 4. The 2-amino acid amide according to claim 1 wherein n is 2 or 3.
- 5. A compound according to claim 1, wherein R1 and R2 form a ring with 3 or 4 carbon atoms together with the oxygen atoms to which they are bound and the carbon atom to which the oxygen atoms are bound.
- 6. A Schiff base of formula 6 formed from benzaldehyde and the 2-amino acid amide of formula 5 of claim 1.
- 7. A Schiff base according to claim 6 obtained as a precipitate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1007113 |
Sep 1997 |
NL |
|
RELATED APPLICATIONS
This is a division of application Ser. No. 09/160,342, filed Sep. 25, 1998 now U.S. Pat. No. 6,133,002 which claims the benefit of Provisional Application No. 60/069,776 filed Dec. 16, 1997.
This application is a complete application that claims the benefit of U.S. Provisional Application No. 60/069,776 filed Dec. 16, 1997, the complete disclosure of which is incorporated herein by reference.
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Provisional Applications (1)
|
Number |
Date |
Country |
|
60/069776 |
Dec 1997 |
US |