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Synthesis and Ring-Chain Tautomerism of 1-(4-Ethoxyphenyl)-5-formyl-1H-1,2,3-triazole-4-carboxylic Acid: The First Representative of a 5-Formyl-1H-1,2,3-triazole-4-carboxylic Acids Series. MOLBANK 2022. [DOI: 10.3390/m1397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Synthesis of the first representative of a 5-formyl-1H-1,2,3-triazole-4-carboxylic acids series – 1-(4-ethoxyphenyl)-5-formyl-1H-1,2,3-triazole-4-carboxylic acid was performed. The 1-azido-4-ethoxybenzene was chosen as a starting reagent in a two-step synthesis, which reacted with the ethyl 4,4-diethoxy-3-oxobutanoate under base catalysis to form ethyl 5-(diethoxymethyl)-1-(4-ethoxyphenyl)-1H-1,2,3-triazole-4-carboxylate with protected formyl and acid groups. By the subsequent saponification of the ester group and removing of acetal protection, the target 1-(4-ethoxyphenyl)-5-formyl-1H-1,2,3-triazole-4-carboxylic acid was obtained. It has been found that the free acid form predominated in the solution under its cyclic 6-hydroxy-1,6-dihydro-4H-furo[3,4-d][1,2,3]triazol-4-one tautomer. According to 1H NMR, cyclic hemiacetal is about 20%.
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Fedoseev SV, Ershov OE. Reaction of 4-Halo-3-hydroxyfuro[3,4-c]pyridin-1(3H)-ones with Morpholine and Thiomorpholine. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021030234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fedoseev SV, Belikov MY, Ershov OV. Synthesis of 3-(Dialkylamino)-4-halofuro[3,4-c]pyridin-1(3H)-ones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s107042802001008x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Fedoseev SV, Lipin KV, Belikov MY, Tafeenko VA. Synthesis of 4-Halo-3-isopropoxyfuro[3,4-с]-pyridin-1(3H)-ones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428019110046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fedoseev SV, Belikov MY. Synthesis of 5-hydroxyfuran-2(5H)-one derivatives (microreview). Chem Heterocycl Compd (N Y) 2018. [DOI: 10.1007/s10593-018-2345-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Fedoseev SV, Belikov MY, Ershov OV, Tafeenko VA. Synthesis of 4-halo-3-(phenylamino)furo[3,4-c]pyridin-1(3H)-ones. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017110070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fedoseev SV, Belikov MY, Ershov OV, Tafeenko VA. Iminothiolactone-thiolactam rearrangement in the synthesis of 4-amino-6-thioxo-3,7,9-triazatricyclo-[6.2.1.01,5]undec-4-ene-2,10-diones. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2167-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Fedoseev SV, Lipin KV, Ershov OV, Belikov MY, Tafeenko VA. Synthesis of 9-alkyl-8-methoxy-8-methyl-1,3,6-trioxo-2,7-diazaspiro[4.4]nonane-4-carbonitriles. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428016110105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fedoseev SV, Ershov OV, Belikov MY, Tafeenko VA. Synthesis of 3-amino-8-hydroxy-1,6-dioxo-4-cyano-2,7-diazaspiro[4.4]non-3-en-2-ides ammonium salts. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s107042801608008x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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