Reaction of 1-substituted 3-(2-hydroxyethylamino)quinoline-2,4(1H,3H)-diones with isothiocyanic acid
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DOI: 10.1007/s10593-020-02701-9
Abstract: 3-Chloroquinoline-2,4-diones react with ethanolamine to form 3-(3-hydroxyethylamino)quinoline-2,4-diones. These compounds afford, depending on substituents in positions 1 and 3, four different products from their reaction with isothiocyanic acid: 3-(2-hydroxyethyl)-2-thioxo-3,3a-dihydro-1H-imidazo[4,5-c]quinolin-4(5H)-ones, 9b-hydroxy-3-(2-hydroxyethyl)-2-thioxo-3,3a,5,9b-tetrahydro-1Himidazo[4,5-c]quinolin-4(2H)-ones, 3-(2-hydroxyethyl)-2-thioxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-4(5H)-ones, or 1′-methyl-7a-phenyl-5-thioxo-3,5,6,7a-tetrahydro-2H-spiro[imidazo[5,1-b]oxazole-7,3′-indolin]-2′-one. read more here.
Keywords: hydroxyethylamino quinoline; reaction; isothiocyanic acid; hydroxyethyl thioxo ... See more keywords
Visible Light-Induced Cascade Sulfonylation/Cyclization to Produce Quinoline-2,4-Diones under Metal-Free Conditions
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DOI: 10.3390/molecules28073137
Abstract: A general visible light-induced sulfonylation/cyclization to produce quinoline-2,4-diones was achieved under photocatalyst-free conditions. The reactions were performed at room temperature, and various substituents (halogen, alkyl, aryl) and substituted products were obtained with 29 examples within… read more here.
Keywords: light induced; sulfonylation cyclization; produce quinoline; quinoline diones ... See more keywords