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RISSynthesis of new derivatives of 5-amino-9H-pyrrolo[2,3-e][1,2,4]triazolo[4,3c]pyrimidine via Leimgruber and Batcho indole synthesis
Background Leimgruber and Batcho indole synthesis as a very efficient tool involves condensation of onitrotoluene
derivatives
with
DMFDMA
as formamide
acetals,
followed
by ...
Green oxidation of sulfides to sulfoxides by H2O2 using DBUH-Br3 as an eco-friendly
DBUH-Br3 as an eco-friendly catalyst has been employed for α-bromination of carbonyl compounds, selective conversion of sulfides to sulfoxides in the presence of H2O2 and bromo-oxidation of methyl phenyl sulfides. All of ...
Synthesis of novel chiral acylating agents: Isoindoline-1,3-diones
Chiral heterocycles have been described as interesting biologically active agents [1]. Recently, we reported the synthesis of some chiral heterocyles through incorporation of chiral amino acids onto the heterocyclic rings ...
Alternative route for the synthesis of new derivatives of benzimidazo[2’,1’:2,3] thiazolo[5,4-d]pyrimidine
A series of new benzimidazothiazolopyrimidines were synthesised through a route involving successive nucleophilic substitution of
5-bromo-2,4-dichloro-6-methylpyrimidine with 2-mercaptobenzimidazole and secondary ...
Synthesis of new pyrimido [4,5-e][1,2,4] triazolo [3,4-b][1,3,4] thiadiazine derivatives via S/N Smiles rearrangement
Several new pyrimido[4,5-e][1,2,4]triazolo[3,4-b][1,3,4]thiadiazine derivatives (5a–g) were synthesized through the condensation reaction of 5-bromo-4,6-dichloropyrimidine (1) and 4-amino-5-methyl-4H-1,2,4triazole-3-thiol(2). ...
Synthesis of 5,5-(ethane-1,2-diyl) bis (3-((5-bromo-6-methyl-2tertiaryaminopyrimidin-4-yl) thio)-4H-1,2,4-triazol-4-amines) and Their Novel bis-cyclized Products, 1,2-bis (pyrimido [5,4e] [1,2,4] triazolo [3,4-b] [1,3,4] thiadiazin-3-yl) ethane, as Potent
Several new derivatives of 5,5′-(ethane-1,2-diyl)bis(3-((5-bromo-6-methyl-2-tertiaryamino pyrimidin-4yl)thio)-4H-1,2,4-triazol-4-amine)(4a–f) and their novel cyclized products, 1,2-bis(pyrimido[5,4-e][1,2,4]
triaz ...
Microwave-assisted synthesis and antibacterial evaluation of new derivatives of 1,2-dihydro-3H-pyrazolo[3,4-d]pyrimidin-3-one
The synthesis of new derivatives of 1,2-dihydro-3H-pyrazolo[3,4-d]pyrimidin-3-one are reported through the treatment of ethyl 4-hydroxy-2-amino-pyrimidine-5-carboxylate 2a-c and few hydrazine derivatives under classical ...
Synthesis, X-ray and Fluorescence Characteristics of Pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine as a Novel Heterocyclic System
Derivatives of a new heterocyclic system, pyrimido[5,4-e]thiazolo[3,2-a]pyrimidine 3, were prepared
by sequential treatment of ethyl 4 - chloro - 2-(methylthio)pyrimidine-5-carboxylate 1 with 4,5-
dihydroth ...
Synthesis of some new pyrimido[4,5-e]tetrazolo[5,1-b][1,3,4]thiadiazine derivatives via an S–N type Smiles rearrangement and their antibacterial evaluation
Several new pyrimido[4,5-e]tetrazolo[5,1-b][1,3,4]thiadiazine derivatives have been synthesised through heterocyclisation of 5-bromo-4,6-dichloropyrimidine with sodium 1-amino-1H-tetrazole-5-thiolate via an S–N type Smiles ...
Synthesis of new pyrazolo[3,4-d]pyrimidine derivatives as potential antibacterial agents
In recent years, pyrazolo[3,4-d]pyrimidines and related fused heterocyclic compounds have attracted the attention of numerous researchers due to their important biological activities and their structure similarity to ...