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Condensation of 3,5-Dialkyltetrahydro-4H-thiopyran-4-ones with Formaldehyde
AbstractThe reaction of 3,5-dimethyl- and 5-methyl-3-(2-propyl)tetrahydro-4 H -thiopyran-4-ones with formaldehyde without or in the presence of...
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Three-Component Synthesis and Crystal Structure of 2-Amino-3-cyano-4H-pyran and -thiopyran Derivatives
Abstract2-Amino-3-cyano-4 H -pyran and -thiopyran derivatives were synthesized by three-component reactions of aldehydes, dimedone, and CH acids. The...
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Bromination of 3,4-dihydro-2H-thiopyran derivatives
Bromination of 3,4-dihydro-2 H -thiopyran derivatives leads to bromo-substituted 3,4-dihydro-2 H -thiopyrans or 4 H -thiopyrans, depending on the reaction...
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Functionalization of the Position 5 of Thiopyran Fragment of 4-(Diethoxyphosphoryl)-4,7-dihydro-5H-thiopyrano[3,4-b]furan
AbstractThe functionalization of 4-(diethoxyphosphoryl)-4,7-dihydro-5 H -thiopyrano[3,4- b ]furan was carried out at the position 5 of thiopyran...
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Unsaturated carboxylic acids in the one-pot synthesis of novel derivatives of 3,4-dihydro-2H-thiopyran
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...
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One-pot synthesis of 2H-thiopyrans from β-amino enones
A one-pot synthesis of 2 H -thiopyrans from β-amino enones has been developed. Sequential treatment of β-amino enones with the Lawesson’s reagent and...
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Deep Eutectic Solvent-Assisted Synthesis of Thiopyrans from β-Oxodithioesters (β-ODE) and Their Antibacterial Properties
AbstractThe use of biodegradable and recyclable deep eutectic solvent (DES) based on choline chloride and urea for the synthesis of 4 H -thiopyrans...
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Synthesis of Monosubstituted Trifluoromethylated Derivatives of 2H-thiete, Dihydrothiophenes, and 2H-thiopyrans
Cyclic keto sulfides (thietan-3-one, tetrahydrothiophen-3-one, γ-thiobutyrolactone, δ-thiovalerolactone, thiopyran-3-one, and thiopyran-4-one) react...
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Bromine- and iodine-mediated oxidative dimerization of cyanothioacetamide derivatives: synthesis of new functionalized 1,2,4-thiadiazoles
The ( 2E,2 ′ E )-2,2′-(1,2,4-thiadiazole-3,5-diyl) bis [3-aryl(hetaryl)-2-cyanoprop-2-entioamides] were obtained by treating ( E )-3-aryl(hetaryl)-2-cyanoprop...
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Reactions of Malononitrile Dimer with Isothiocyanates
AbstractThe reaction of 2-amino-1,1,3-tricyanopropene (malononitrile dimer) with isothiocyanates leads to...
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A convenient synthesise of 3,4-dihydro-2H-thiopyran-2,3-dicarboxylic acid derivatives
A three-component one-pot procedure to synthesize 2,4-disubstituted b -fused 3,4-dihydro-2 H -thiopyran derivatives by the Diels—Alder reaction of the in...
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Thiopyran-3-one 1,1-dioxides in the synthesis of heterocycles (microreview)
Microreview describes recent advances in the synthesis of N,O,S-heterocycles using thiopyran-3-one 1,1-dioxides. Selected works published since 2013...
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Heterocyclization of Polyfunctionalized Pyrimidine: Synthesis and Antiproliferative Evaluation of Novel Azino- and Azolopyrimidines
Abstract2-Amino-6-sulfanylidene-5,6-dihydropyrimidin-4(3 H )-one ( 1 ) was subjected to reaction with urea and aromatic aldehydes in acidic medium to...
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Synthesis of tetrahydro-4H-thiopyran-4-ones (microreview)
In this microreview, we consider the methods used for the synthesis of tetrahydro-4 H -thiopyran-4-ones over the last 7 years.
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Tetrahydro-4H-thiopyran-4-one in multicomponent reactions (microreview)
This paper summarizes multicomponent reactions with the participation of tetrahydro-4 H -thiopyran-4-one, mainly resulting in the formation of sulfur-...
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S-Heterocycle Synthesis
The heterocyclic moieties are fundamental part of widespread diversity of biologically active natural products and synthetic compounds. The...
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Thermodynamic and kinetic studies of the retro-Diels-Alder reaction of 1,4-cyclohexadiene, 4H-pyran 4H-thiopyran, 1,4-dioxine, and 1,4-dithiine: a theoretical investigation
Theoretical studies of the retro-Diels-Alder reaction of 1,4-cyclohexadiene, 4H-pyran 4H-thiopyran, 1,4-dioxine, and 1,4-dithiine in the gas phase...
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Rh-catalyzed cyclization of carbamates–synthesis of a new heterocyclic system: tetrahydro-3H-4-oxa-2-thia-2b-azacyclopropa[cd]pentalen-3-one 2,2-dioxide
A simple method for the synthesis of five- and six-membered ring sulfone carbamates was elaborated. The method includes reaction of the corresponding...
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Functionalization of 4-(Diethoxyphosphoryl)-4,7-dihydro5H-thiopyrano[3,4-b]furan-5-carboxylic Acid Ester at the α-Position of the Furan Fragment
AbstractOn an example of aminomethylation, chloromethylation, and acetylation reactions, it was shown that ethyl 4-(diethoxyphosphoryl)-4,7-dihydro-5
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Sulfo-Biginelli reaction: an insight into interaction between sulfamides and enolizable ketones
The interaction employing sulfamide and enolizable ketones was closely inspected in Biginelli reaction. The three-component variation of the reaction...
