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Information × Registration Number 0207U004135, 0106U002158 , R & D reports Title Development of nitrogen- and sulfur containing chiral heterocyclic for preparation of short-pitch cholesteric liquid crystals. popup.stage_title Head Vashchenko Valeriy Vladimirovich, Registration Date 30-01-2007 Organization State Scientific Institution "Institute for Single Crystals" of National Academy of Science of Ukraine popup.description2 It is found the stereochemical configuration (4S,7R) of 2-bromo-3-cyano-4,5,6,7-terahydrobenzothiophene which is intermediate for effective chiral dopants for nematic LC and method of its obtaining is improved. Stereochemistry of reaction of 2-arylidene-4-methylmenthanones with cyanoacetic derivatives is studied. It is shown that under the basic catalysis the 2-amino-4H-dyhydropyrones, but not 2-hydroxypyridine derivatives, form as major products5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close