Extracurricular laboratory: Discover of C21H30O2

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Related Products of 1235-74-1, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 1235-74-1, Name is (1R,4aS,10aR)-methyl 7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate, SMILES is O=C([C@]1(C)CCC[C@]2(C)C3=C(CC[C@@]12[H])C=C(C(C)C)C=C3)OC, belongs to isothiazole compound. In a article, author is Duan, XG, introduce new discover of the category.

Reaction of trithiazyl trichloride with active methylene compounds

Activated allylic compounds react with trithiazyl trichloride, (NSCl),, to give 1,2,5-thiadiazoles 1 and isothiazoles 2. An allylic 2-substituent normally prevents formation of an aromatic 1,2,5-thiadiazole, and isothiazole formation becomes the major pathway. Simple allylic compounds are not very reactive towards (NSCl)(3) but a terminal electron withdrawing group (CO2Et) enhances the reactivity. With unsymmetrical allylic compounds, isothiazole formation is regiospecific placing the more electron withdrawing group adjacent to the ring sulfur. 1,3-Diketones give 3-acyl-1,2,5-thiadiazoles; unsymmetrical 1,3-diketones give these thiadiazoles regiospecifically, explicable by cyclisation of an intermediate onto the more reactive carbonyl group. 1,4-Diketones give 3,4-diacyl-1,2,5-thiadiazoles; thus 1,2-dibenzoyl-ethane, -ethene and -ethyne all give 3,4-dibenzoylthiadiazole (40-44%). Many of these trithiazyl trichloride reactions provide attractive one-step routes to 1,2,5-thiadiazoles and isothiazoles.

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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com