Patent US4959173A successfully refreshed from Google Patents.
US4959173A
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Optically active ester compound
Assignee: Adeka Corp
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Filing: 1988-09-08
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Granted: 1990-09-25
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Expires: 2008-09-08
Abstract
Abstract An optically active ester of the formula ##STR1## wherein p is 0 or 1, q is 1 or 2, r is 1 or 2, q+r is 3, and s is 0 or 1. R 1 and R 2 in the above formula are each independently selected from the group consisting of C 6-18 straight chain alkyl and an optically active group of the formula ##STR2## and in which m is 2 to 5, n is 1 or 2, X is hydrogen or chlorine, R 3 is hydrogen or C 1-11 straight chain alkyl, and C * represents a chiral carbon atom, with the proviso that when n is 1 and X is hydrogen, R 3 is C 1-11 straight chain alkyl. When q is 2 and r is 1 and R 1 is C 6-18 straight chain alkyl, p is 1; on the other hand, when q is 1 and r is 2 and R 2 is an optically active group of the above formula, s is 1. One of R 1 and R 2 is an optically active group of the above formula, and the other of R 1 and R 2 is C 6-18 straight chain alkyl.
Inventors
- 👤 Toshihiro Shibata
- 👤 Norio Kurosawa
- 👤 Masaki Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:31
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021; C07; C07C; C07C69/00; C07C69/76; C07C69/84; C07C69/92; C07C69/94
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
187 words
An optically active ester of the formula ##STR37## wherein p is 0 or 1, q is 1 or 2, r is 1 or 2, q+r is 3, s is 0 or 1, and R 1 and R 2 are each independently selected from the group consisting of C 6-18 straight chain alkyl and an optically active group of the formula ##STR38## and in which m is 2 to 5, n is 1 or 2, X is hydrogen or chlorine, R 3 is hydrogen or C 1-11 straight chain alkyl, and C * represents a chiral carbon atom, and when n is 1 and X is hydrogen, R 3 is C 1-11 straight chain alkyl; one of R 1 and R 2 being a said optically active group and the other of R 1 and R 2 being a said C 6-18 straight chain alkyl group; and when q is 2 and r is 1 and R 1 is C 6-18 straight chain alkyl, p is 1; and when q is 1 and r is 2 and R 2 is a said optically active group, s is 1.
Claim 2
Dependent Claim
187 words
An optically active ester of the formula ##STR37## wherein p is 0 or 1, q is 1 or 2, r is 1 or 2, q+r is 3, s is 0 or 1, and R 1 and R 2 are each independently selected from the group consisting of C 6-18 straight chain alkyl and an optically active group of the formula ##STR38## and in which m is 2 to 5, n is 1 or 2, X is hydrogen or chlorine, R 3 is hydrogen or C 1-11 straight chain alkyl, and C * represents a chiral carbon atom, and when n is 1 and X is hydrogen, R 3 is C 1-11 straight chain alkyl; one of R 1 and R 2 being a said optically active group and the other of R 1 and R 2 being a said C 6-18 straight chain alkyl group; and when q is 2 and r is 1 and R 1 is C 6-18 straight chain alkyl, p is 1; and when q is 1 and r is 2 and R 2 is a said optically active group, s is 1.
Claim 3
Dependent Claim
14 words
An ester according to claim 1, wherein q is 1 and r is 2.
Claim 4
Dependent Claim
14 words
An ester according to claim 1, wherein q is 2 and r is 1.
Claim 5
Dependent Claim
27 words
An ester according to claim 1, wherein R 1 is a said optically active group and R 2 is a said C 6-18 straight chain alkyl group.
Claim 6
Dependent Claim
27 words
An ester according to claim 1, wherein R 1 is a said C 6-18 straight chain alkyl group and R 2 is a said optically active group.
Claim 7
Dependent Claim
14 words
An ester according to claim 1, wherein p is 1 and s is 1.
Claim 8
Dependent Claim
14 words
An ester according to claim 1, wherein p is 1 and s is 0.
Claim 9
Dependent Claim
14 words
An ester according to claim 1, wherein p is 0 and s is 1.
Claim 10
Dependent Claim
10 words
An ester according to claim 1, wherein X is hydrogen.
Claim 11
Dependent Claim
10 words
An ester according to claim 1, wherein X is chlorine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |