In an article, author is Orlando, Ahmed M., once mentioned the application of 1896-62-4, Product Details of 1896-62-4, Name is (E)-4-Phenylbut-3-en-2-one, molecular formula is C10H10O, molecular weight is 146.1858, MDL number is MFCD00008779, category is isothiazole. Now introduce a scientific discovery about this category.
A new monoclinic polymorph of 3-diethylamino-4-(4-methoxyphenyl)-1,1-dioxo-4H-1 lambda 6,2-thiazete-4-carbonitrile
A new monoclinic form of the title compound, C14H17N3O3S, has been found upon slow crystallization from water. Another monoclinic form of the compound was obtained previously from a mixture of dichloromethane and diethyl ether [Clerici et al. (2002). Tetrahedron, 58, 5173-5178]. Both phases crystallize in space group P2(1)/n with one molecule in the asymmetric unit. The formally single exocyclic C-N bond that connects the -NEt2 unit with the thiazete ring is considerably shorter than the adjacent, formally double, endocyclic C=N bond. This is likely to be due to the extended conjugated system between the electron-donor diethylammine fragment and the electron-withdrawing sulfonyl group. In the newly discovered polymorph, the methoxy group is rotated by almost 180 degrees around the phenyl-OCH3 bond, resulting in a different molecular conformation.
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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com