95201-98-2Relevant academic research and scientific papers
Organic compounds and their use as pharmaceuticals
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, (2008/06/13)
Compounds of the following formula have pharmacutical properties: STR1 in which R1 and R2 independently are hydrogen, halo, nitro, amino, C2-5 acylamino, C1-4 alkyl, C1-4 alkoxy, C1-4 alkylthio, C1-4 alkylsulphonyl, N-substituted heterocyclyl, optionally substituted phenyl, optionally substituted phenylthio, optionally substituted phenylsulphonyl or optionally substituted phenylsulphonamido, or R1 and R2 together form a C3-5 alkylene bridge, R3 is C1-4 alkyl or C2-4 alkenyl, and X is (i) --(CH2)n N(R4)2 where each R4 independently is C1-4 alkyl, C2-4 alkenyl or optionally substituted C6 H5 CH2 --, and n is 1, 2 or 3, or (ii) a 5- to 8-membered alicyclic group containing one or two nitrogen atoms and directly attached to the amido nitrogen or attached by a C1-3 alkylene chain; and salts thereof.
Reactions with Methyl 3-Hydroxythiophene-2-carboxylate. Part 2. A New Route to Mono- and Di-alkyl Ethers of Thiotetronic and α-Halogenothiotetronic Acids
Corral, Carlos,Lissavetzky, Jaime
, p. 2711 - 2714 (2007/10/02)
Methyl 2-chloro-3-oxo-2,3-dihydrothiophene-2-carboxylates (2), obtained from methyl 3-hydroxythiophene-2-carboxylate by straightforward halogenation, added alcohols and then lost hydrogen chloride at room temperature to yield thiophene-2,4-diols (4).Succe
