Invention Grant
- Patent Title: Cyclized unsaturated keto acids
- Patent Title (中): 环化不饱和酮酸
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Application No.: US461728Application Date: 1983-01-28
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Publication No.: US4701553APublication Date: 1987-10-20
- Inventor: Justin C. Powell
- Applicant: Justin C. Powell
- Applicant Address: NY White Plains
- Assignee: Texaco Inc., White
- Current Assignee: Texaco Inc., White
- Current Assignee Address: NY White Plains
- Main IPC: C07C51/347
- IPC: C07C51/347 ; C10M133/16 ; C07C59/82 ; C10M1/28 ; C10M1/36
Abstract:
Unsaturated cyclic keto acid may be prepared by cyclizing alken-2-yl dicarboxylic acid anhydride with Lewis acid catalyst in anhydrous Friedel-Craft solvent. Amides of these unsaturated cyclic keto acids useful as friction improvers in lubricating oils, may be prepared by reaction of an amine such as ethanolamine with an unsaturated cyclic keto acid.
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