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Your search keyword '"Konstantin L. Ovchinnikov"' showing total 2 results
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2 results on '"Konstantin L. Ovchinnikov"'

1. Bromination of 3,4-dihydro-2H-thiopyran derivatives

Author

Vladimir V. Plakhtinskii, Aleksei V. Kolobov, Valentine G. Nenajdenko, Ekaterina А. Merkulova, Olga А. Belyaeva, and Konstantin L. Ovchinnikov

Subjects
Reaction conditions, Thiopyran, chemistry.chemical_compound, Chemistry, Organic Chemistry, Organic chemistry, Halogenation
Abstract

Bromination of 3,4-dihydro-2H-thiopyran derivatives leads to bromo-substituted 3,4-dihydro-2H-thiopyrans or 4H-thiopyrans, depending on the reaction conditions and the structure of the starting heterocycles.

Published
2021
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2. Unsaturated carboxylic acids in the one-pot synthesis of novel derivatives of 3,4-dihydro-2H-thiopyran

Author

Aleksei V. Kolobov, Ekaterina А. Merkulova, Konstantin L. Ovchinnikov, Valentine G. Nenajdenko, and Victor N. Khrustalev

Subjects
Chalcone, Thiopyran, 010405 organic chemistry, Organic Chemistry, One-pot synthesis, 010402 general chemistry, 01 natural sciences, 0104 chemical sciences, Acylation, chemistry.chemical_compound, chemistry, Methacrylic acid, Reagent, Organic chemistry, Selectivity
Abstract

The reactions of α,β-unsaturated ketones and Lawesson’s reagent with maleic, itaconic, or 5-norbornene-2,3-dicarboxylic acid led to the corresponding 3,4-dihydro-2H-thiopyran anhydrides. As a result of the reaction of methacrylic acid, Lawesson’s reagent, and chalcone, 4-methyl-1,8-diphenyl-2,6-dithiabicyclo[2.2.2]octan-3-one is formed. The selectivity of the acylation of amines using the synthesized anhydrides was studied.

Published
2021
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