USE OF AMIDES AND/OR POLYAMIDES AS AUXILIARY AGENTS FOR ASPHALT AND BITUMEN COMPOSITIONS
申请人:Bigorra Llosas Joaquin
公开号:US20110118391A1
公开(公告)日:2011-05-19
Suggested is the use of amides and/or polyamides obtainable by condensation of (a) mono- and/or dicarboxylic acids and (b) amines and/or polyamines as auxiliary agents for aqueous asphalt and bitumen compositions.
This application discloses a novel process for the synthesis of himbacine analogs, as well as the compounds produced thereby. The synthesis proceeds by alternative routes including the cyclic ketal amide route, the chiral carbamate amide route, and the chiral carbamate ester route. The compounds produced thereby are useful as thrombin receptor antagonists. The chemistry disclosed herein is exemplified in the following synthesis sequence: