2H,5H-Benzo[l,2-b:4,5-b′]bisthiete—A Highly Reactive Bisdiene System
✍ Scribed by Prof. Dr. Herbert Meier; Dipl.-Chem. Axel Mayer
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 351 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0044-8249
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## Abstract For Abstract see ChemInform Abstract in Full Text.
Highly enantioselective asymmetric hydrogenation of readily accessible olefins, (E)- and (Z)-[1-(toluene-4-sulfonyl)-1,2,3, 4-tetrahydro-1H-benzo[b]azepin-5-ylidene]acetic acid (4a and 4b, respectively) and [1-(toluene-4-sulfonyl)-2, 3-dihydro-1H-benzo[b]azepin-5-yl]acetic acid (4c), is presented as
In continuation of our work on photo-and electron collision-induced reactions of thi01-l~~ and selenol-esters", 61 we have now synthesized the selenocarboxylic Se-aryl esters (2)-( 5 ) as first examples exhibiting liquid crystal properties. The positions of their carbonyl absorptions are typical for