Unusual Reaction of Tetrachlorocyclopentadienone Dimer with Secondary Amines

Tetrachlorocyclopentadienone dimer reacts with secondary amines to afford unusual products, tricyclic 6-oxo-1,1a,3a,6-tetrahydrocyclopropa[c]pentalene-1-carboxamide derivatives.     

New monomers for fullerene-containing polymers

By reaction of 2-(acryloyloxyethyl) and (undecen-10-en-1-yl) methylmalonates with fullerene C₆₀ in the system toluene-CBr₄-DBU, and also by reaction of 2-(2,2-dichloroacetoxy)ethyl acrylate with C₆₀ in the system toluene-DBU the corresponding products of fullerene monocyclopropanation were synthesized.     

Disaccharide blocks for analogs of OSW-1

The acetalization of phenyl 1-thio-α-L-arabinopyranoside with 2,3-butanedione in the medium of MeOH-CH(OMe)₃-CSA proceeded with the prevailing formation of the corresponding 3,4-bisacetal that further was converted in compounds, which were regio- and stereoisomers of disaccharide block of OSW-1.     

New chiral dihydroxycyclopropane block from L-tartaric acid

Russian Journal of Organic Chemistry -     

Influence of steric factors on the direction of reactions

Russian Journal of Organic Chemistry -     

New Azetidinone Building Block for Carbapenems

Russian Journal of Organic Chemistry - A new versatile building block for the synthesis of carbapenems,...     

Synthesis of N-Substituted Methyl 4<Emphasis Type="Italic">H</Emphasis>-Thieno[3,2-<Emphasis Type="Italic">b</Emphasis>]pyrrole-5-carboxylates

The alkylation of methyl 4H-thieno[3,2-b]pyrrole-5-carboxylate with methyl iodide and allyl, propargyl, and benzyl bromides in the presence of sodium hydride in THF afforded the corresponding N-substituted derivatives. Some reactions of the alkylation products were studied.     

Some reactions of 5-benzyl-2,3,5-trichloro-4,4-dimethoxy-cyclopent-2-en-1-one and its derivatives

5-Benzyl-2,3,5-trichloro-4,4-dimethoxycyclopent-2-en-1-one and 2-benzyl-2,4,5-trichlorocyclopent-4-ene-1,3-dione were subjected to dehydrochlorination by the action of 1,4-diazabicyclo[2.2.2]octane, selective dechlorination at C⁵ by the action of CrCl₂, and Ad_NE replacement of the chlorine atom at C³ by the action of secondary amines. The reduction of 2-benzyl-2,4-dichloro-5-morpholinocyclopent-4-ene-1,3-dione with sodium tetrahydridoborate in methanol and ethanol gave different products.