Search Results - "Kulinkovich, O. G."

Titanacyclopropanes as versatile intermediates for carbon-carbon bond formation in reactions with unsaturated compounds by Kulinkovich, O. G.

“…Dialkoxytitanacyclopropane intermediates [or titanium (II)-olefin complexes] generated in situ from ethylmagnesium bromide and titanium (IV) isopropoxide react…”
Get full text

1,n-Dicarbanionic Titanium Intermediates from Monocarbanionic Organometallics and Their Application in Organic Synthesis by Kulinkovich, Oleg G, de Meijere, Armin

“…Kulinkovich and de Meijere compile the contributions to organic chemistry mainly made in the last 10-20 years, several of which have led to synthetically…”
Get full text

Preparation of 3-bromomethyl-3-butenal diethylacetal and its conversion into isoprenoid aldehydes derivatives by Mineeva, I. V, Kulinkovich, O. G

“…The cyclopropanation of ethyl 3,3-diethoxypropionate with alkoxytitanacyclopropane reagents followed by the cleavage of the three-membered carbocycle in the…”
Get full text

Synthesis of (+)-disparlure from diethyl (−)-malate via opening and fragmentation of the three-membered ring in tertiary cyclopropanols by Kovalenko, V. N, Masalov, N. V, Kulinkovich, O. G

“…(+)-Disparlure [(7R,8S)-7,8-epoxy-2-methyloctadecane, pheromone of the gypsy moth Lymantria dispar L.] was synthesized starting from diethyl (−)-malate via…”
Get full text

Alkylation of carboxylic acid derivatives with dialkoxytitanacyclopropane reagents by Kulinkovich, O. G.

Get full text

Synthesis of epothilones molecule fragment (15R)-C ¹³ -C ²¹ from D-mannitol by Kovalenko, V. N, Sokolov, N. A, Kulinkovich, O. G

“…Efficient synthesis of an epothilone molecules fragment (15R)-C¹³-C²¹ was carried out from D-mannitol through its conversion into methyl…”
Get full text

Transformation of carboxylic acid esters into 2-substituted allyl halides through tertiary cyclopropyl sulfonates. Application in the synthesis of (±)-ipsenol and (±)-ipsdienol, components of Ips typographus spark beetle pheromone by Matyushenkov, E. A., Kulinkovich, O. G.

“…Cyclopropanation of the ester group in ethyl 3-chloropropanoate and subsequent cleavage of the three-membered carbocycle in intermediate…”
Get full text

Stereoselective Synthesis of (7aS)-1-Methylenehexahydro-1H-pyrrolizine and (−)-Heliotridane from N-Diphenylmethyl-(S)-proline Ethyl Ester by Lysenko, I. L., Kulinkovich, O. G.

Get full text

Stereoselective synthesis of cis-2-aryl- and 2-alkyl-1-chlorocyclopropanecarboxaldehydes by Verniest, Guido, Bombeke, Filip, Kulinkovich, O.G, De Kimpe, Norbert

“…The title compounds were stereoselectively synthesized via a semi-benzilic Favorskii rearrangement of 3-aryl- and 3-alkyl-2,2-dichlorocyclobutanols, obtained…”
Get full text

Synthesis of epothilone D with the forced application of oxycyclopropane intermediates by Hurski, A. L., Kulinkovich, O. G.

“…The total synthesis of epothilone D with six-fold application in the intermediate stages of successive cyclopropanation — opening or cleavage of the…”
Get full text

The Chemistry of Cyclopropanols by Kulinkovich, Oleg G

“…The present review is written for the purpose of reflecting recent achievements in the areas of synthesis and synthetic applications of cyclopropanols…”
Get full text

Synthesis of methyl 3-bromomethylbut-3-enoate and its reactions with aldehydes and tributylchlorostannane in the presence of zinc by Mineeva, I. V., Kulinkovich, O. G.

“…Methyl 3-bromomethylbut-3-enoate smoothly reacted with prenal, β-ionylideneacetaldehyde, benzyloxyacetaldehyde, and tributylchlorostannane in the presence of…”
Get full text

Synthesis of epothilones molecule fragment (15R)-C13-C21 from D-mannitol by Kovalenko, V. N., Sokolov, N. A., Kulinkovich, O. G.

“…Efficient synthesis of an epothilone molecules fragment (15 R )-C 13 -C 21 was carried out from D-mannitol through its conversion into methyl 2,3- O…”
Get full text

Synthesis of isomeric 1,3-dimethyl-2,9-dioxabicyclo[3.3.1]nonanes and 1’-hydroxybrevicomin from ethyl 5-oxohexenoate ethyleneacetal through cyclopropanation of an ester group followed by oxidative opening of the three-membered ring by Astashko, D. A., Kulinkovich, O. G., Tyvorskii, V. I.

Get full text

Reductive ethylation of homoallyl alcohols with a disubstituted double bond with ethylmagnesium bromide in the presence of titanium(IV) isopropoxide by Kulinkovich, O. G., Shevchuk, T. A., Isakov, V. E., Prokhorevich, K. N.

Get full text

Differentiation between the ethoxycarbonyl groups in diethyl malate via their titanium-catalyzed reductive cyclopropanation with ethylmagnesium bromide and subsequent site-selective three-carbon ring cleavage by Bekish, Andrei V., Kulinkovich, Oleg G.

“…Ethoxycarbonyl groups in O-THP protected racemic diethyl malate 1 were differentiated by their reductive cyclopropanation with ethylmagnesium bromide in the…”
Get full text

A cyclopropanol approach to the synthesis of the C13–C21 fragment of epothilones from diethyl (S)-malate by Bekish, Andrei V., Isakov, Vladimir E., Kulinkovich, Oleg G.

“…A convenient new approach to the synthesis of the C13–C21 epothilone fragment using the cyclopropanation of the ethoxycarbonyl groups in O-THP protected…”
Get full text

Synthesis of substituted 5H-1,2,3,4,6,7,8,9-octahydrodipyrido-[4,3-b;3′,4′-d]pyrroles by the Pictet-Spengler condensation by Bagutsky, V. V., Kulinkovich, O. G.

Get full text

On the mechanism of titanium-catalyzed cyclopropanation of esters with aliphatic organomagnesium compounds. Deuterium distribution in the reaction products of (CD3)2CHMgBr with ethyl 3-chloropropionate in the presence of titanium tetraisopropoxide by Epstein, O. L., Savchenko, A. I., Kulinkovich, O. G.

Get full text

A convenient route to 1-(2-oxiranyl)-1,4-diketones and their application to the synthesis of endo-brevicomin, endo-isobrevicomin, frontalin and related compounds via alkylated 6,8-dioxabicyclo[3.2.1]octan-2-ones by Tyvorskii, Vladimir I, Astashko, Dmitry A, Kulinkovich, Oleg G

“…1-(2-Oxiranyl)-1,4-alkanediones were prepared from the ethylene acetals of ethyl 4-oxoalkanoates via the oxidation of the intermediate…”
Get full text