On April 21, 1999, Konstantinova, Lidia S.; Rakitin, Oleg A.; Rees, Charles W.; Souvorova, Ljudmila I.; Torroba, Tomas published an article.Synthetic Route of 2510-01-2 The title of the article was One-pot synthesis of indeno-1,2-thiazines, -[1,2]dithioles and thiophenes; new liquid crystalline materials. And the article contained the following:
In a search for further examples of a new type of discotic liquid crystal, the authors have examined the reactions of S2Cl2 in the presence of a chlorinating agent (NCS) and a base (Hunig’s base or DABCO), mostly in THF, with cyclopent-1-enylacetic acid (I), inden-3-ylacetic acid (II) and its nitrile (III) and 1-(dicyanomethylene)indane (IV). The cyclopentene acid I gives purple crystals of the trichlorocyclopenta[1,2]dithiole ester, the product of heterocyclic ring formation, chlorination and dehydrochlorination and, unexpectedly, conversion of the acid in THF into its 4-chlorobutyl ester. Indenylacetic acid II gives methyleneindenes, the tricyclic 1,2-dithiolone V and the deep purple thiophene VI. Indenylacetonitrile III gives E-1-(伪-chloro-伪-cyanomethylene)indane and E- and Z-1-(伪-chloro-伪-cyanomethylene)-2,3-dichloroindene and Z-2-chloro-1-(伪-cyanomethylene)indane, depending upon the precise reaction conditions. Dicyanomethylene indane IV gives 1-(dicyanomethylene)-2,3-dichloroindene (VII) and the red, thermochromic 3,9-dichloro-4-cyanoindeno[1,2-e]-1,2-thiazine; the analogous cyano-ester gives the corresponding products. On melting, crystals of VI and VII are strongly birefringent. Mechanisms are proposed for the new transformations. The experimental process involved the reaction of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile(cas: 2510-01-2).Synthetic Route of 2510-01-2
The Article related to indenothiazine preparation, indenodithiole preparation, indenothiophene preparation, thiazine indeno preparation, dithiole indeno preparation, thiophene indeno preparation and other aspects.Synthetic Route of 2510-01-2
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts