65051-39-0Relevant academic research and scientific papers
Selective synthesis of α-organylthio esters and α-organylthio ketones from β-keto esters and sodium S-organyl sulfurothioates under basic conditions
Kazmierczak, Jean C.,Cargnelutti, Roberta,Barcellos, Thiago,Silveira, Claudio C.,Schumacher, Ricardo F.
supporting information, p. 234 - 244 (2021/02/27)
We described herein a selective method to prepare α-organylthio esters and α-organylthio ketones by the reaction of β-keto esters with sodium S-benzyl sulfurothioate or sodium S-alkyl sulfurothioate (Bunte salts) under basic conditions in toluene as the solvent at 100 °C. When 4 equivalents of a base were used, a series of differently substituted α-thio esters were obtained with up to 90% yield. On the other hand, employing 2 equivalents of a base, α-thio ketones were achieved after 18 h under air. Furthermore, after a shorter reaction time, the isolation of keto-enol tautomers was possible, revealing them as significant intermediates for the mechanism elucidation.
A Convenient Synthesis of Ethyl 2-(4-Nitrophenyl)-3,4-disubstituted and c-Fused Thiophene-5-carboxylates
Rangnekar, D. W.,Mavlankar, S. V.
, p. 1455 - 1457 (2007/10/02)
A convenient one step synthesis of the hitherto unknown ethyl 2-(4-nitrophenyl-3,4-disubstituted and c-fused thiophene-5-carboxylates was achieved by the condensation of ethyl 4-nitrobenzylthioacetate with a variety of 1,2-dicarbonyl compounds using sodiu
Phenylamidine derivatives
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, (2008/06/13)
A compound having the general formula: STR1 wherein Ar is an aryl group (especially an α-naphthyl, β-naphthyl or phenyl group) which may be substituted by one or more C1-4 alkyl, C1-4 alkoxy, methylenedioxy halogen, CF3, NH2 or NO2 groups; A is a --CH2 --, --CHOH--, --CH2 O--, --CH2 S--, --CH2 NH--, --OCH2 --, --SCH2 --, --NH--, --NHCOCH2 --, --CH2 NHCH2 -- or --NHCH2 -- group; Y is O or NH; and B is a single bond and, when A is --CH2 --S, may be a --CH2 --, or --CH(CH3)-- group; and their acid addition salts when Y is NH and their metal salts when Y is O. The compounds and their salts have therapeutic utility in treatment of neuropsychic ailments.
Acetohydroxamic acids
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, (2008/06/13)
The invention provides new acetohydroxamic acid derivatives, having interesting properties on the central nervous system, of the formula: R1 R2 R3 C-CO-NHOH, in which R2 and R3 are each hydrogen or C1-6 alkyl, and R1 is C1-6 alkyl Z1 Z2 N (where Z1 and Z2 are each phenyl, substituted phenyl, or cycloalkyl), substituted hydantoinyl, benzhydroxylcarboxamido, Z3 CH2 -- (where Z3 = optionally substituted aryl), Z4 -A- (where Z4 is optionally substituted phenyl or naphthyl, and A is --NH--, --N(C1-4 alkyl)--, --N(C5-6 cycloalkyl)--, --NHCO--, --N(C1-4 alkyl)CO--, --N(C5-6 cycloalkyl)CO--, --CONH--, --CON(C1-4 alkyl)--, --CON(C5-6 cycloalkyl)--, --NHCONH--, --N(C5 H6)CONH--, or --N(substituted phenyl)CONH--, optionally substituted benzimidazolyl, or an optionally substituted tricyclic radical, and their metal and acid addition salts.
