677304-78-8, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 677304-78-8, Name is 5-Bromobenzo[d]isothiazole-3-carboxylic acid,introducing its new discovery.
Novel Annelation Method to Pyridine and Isoquinoline by Photochemical Means
Intramolecular photoaddition reactions of 2-(omega-alkenyl)isoquinolin-1(2H)-ones and 1-(omega-alkenyl)pyridin-2(1H)-ones were examined, and the regioselectivity and dependence of these reactions on the length of methylene chain in the alkenyl group were clarified.By utilizing these reactions, a synthetic route to indolizine and quinolizine derivates was elaborated.By an extension of this approach to the intermolecular reaction, 6-methoxy-3-methyl-1,2-dihydrocyclobutapyridin-4(3H)-one was synthesized from 4,6-dimethoxy-1-methylpyridin-2(1H)-one.Keywords-2+2 photocycloaddition; intramolecular photoaddition; photocycloreversion; annelation; indolizine; quinolizine; cyclobutapyridine; 4,6-dimethoxypyridin-2(1H)-one; 1-(omega-alkenyl)pyridin-2(1H)-one; 2-(omega-alkenyl)isoquinolin-1(2H)-one
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Reference£º
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com