Search Results - "Cherkinsky, Marina"

Reaction of selenium and tellurium halides with propargyl alcohols. The regio- and stereoselectivity of addition to the triple bond by Braverman, Samuel, Cherkinsky, Marina, Jana, Ranjan, Kalendar, Yuliya, Sprecher, Milon

“…A convenient method to incorporate selenium into an organic molecule is reported. Various aspects of the reaction of SeCl2 with propargyl alcohols, i.e.,…”
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Synthesis and reactivity of dipropargylic disulfides: tandem rearrangements, cyclization, and oxidative dimerization by Braverman, Samuel, Cherkinsky, Marina, Meridor, David, Sprecher, Milon

“…Synthesis and facile rearrangement and cyclization reaction of new dipropargylic disulfides are described. A possible mechanism for these transformations…”
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One-pot three-component preparation of novel selenium-containing spiroketals by Braverman, Samuel, Cherkinsky, Marina, Kalendar, Yuliya, Gottlieb, Hugo E., Mats, Ella Meltzer, Gruzman, Arie, Goldberg, Israel, Sprecher, Milon

“…The one‐pot three‐component preparation of novel selenium‐containing spiroketals with potential biological activity is described. When in situ prepared…”
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Synthesis and cascade reactions of diallenyl α-disulfones and sulfinyl sulfones by Braverman, Samuel, Cherkinsky, Marina, Goldberg, Israel, Sprecher, Milon

“…The synthesis and reactivity of diallenic α-disulfones and diallenic sulfinyl sulfones are described. Both types of compound exhibit enhanced reactivity…”
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Erratum: Reaction of selenium and tellurium halides with propargyl alcohols. The regio- and stereoselectivity of addition to the triple bond, Erratum to poc.1729 by Braverman, Samuel, Cherkinsky, Marina, Jana, Ranjan, Kalendar, Yuliya, Sprecher, Milon

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Chalcogen Halides Plus Propargyl Alcohols-Fascinating Reaction Pathways and Products by Braverman, Samuel, Cherkinsky, Marina, Pechenick-Azizi, Tatiana, Kalendar, Yuliya, Sprecher, Milon

“…A convenient method to incorporate selenium into an organic molecule is reported. Selenium halides undergo smooth 1,2-addition to the triple bond of various…”
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Thermal rearrangements of bis-allenyl thiosulfonates. Synthesis of novel thienothiophene and thieno-oxathiine derivatives by Birsa, Mihail L., Cherkinsky, Marina, Braverman, Samuel

“…The synthesis and thermal rearrangement of bis-allenyl thiosulfonates are described. Bis-γ,γ-disubstituted allenyl thiosulfonates have been prepared by…”
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Base-Catalyzed Reactivity of Sulfur- and Selenium-Bridged Cyclic Alkynes: Tandem Isomerization and Cycloaromatization versus Isomerization and Nucleophilic Addition by Braverman, Samuel, Cherkinsky, Marina, Birsa, Mihail L., Zafrani, Yossi

“…The synthesis and base‐catalyzed reactivity of some novel sulfur‐ and selenium‐bridged cyclic di‐ and tetralkynes, derived from 1,2‐ and 1,4‐dihydroxybenzene…”
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A new approach to the synthesis of 2-vinylthiophenes and selenophenes; competition between free radical and anionic cycloaromatization of bridged di- and tetrapropargylic sulfides and selenides by Zafrani, Yossi, Cherkinsky, Marina, Gottlieb, Hugo E, Braverman, Samuel

“…A series of unknown di- and tetrapropargylic sulfides and selenides have been prepared. In the presence of t-BuOK in dry THF these compounds underwent…”
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Preparation of trichlorothioacetamides and their unexpected rearrangement to thiooxamides by Braverman, Samuel, Cherkinsky, Marina, Kedrova, Ludmila

“…The preparation of several N-monosubstituted trichlorothioacetamides by thionation of the corresponding acetamides, with the use of Heimgartner's reagent is…”
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Rearrangements of Trihalomethyl Ketones by Braverman, Samuel, Cherkinsky, Marina, Suresh Kumar, E.V.K, Gottlieb, Hugo E

“…Trihalomethyl ketones have been prepared and their reactivity under basic conditions was investigated in terms of competition between 1,2- vs. 1,3-elimination…”
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A new synthesis of N-sulfinylamines via β-elimination of chloroform from trichloromethanesulfinamides by Braverman, Samuel, Cherkinsky, Marina

“…The synthesis of various N-monosubstituted trichloromethanesulfinamides by two alternative and novel procedures is described. All these compounds have been…”
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Brominated vinyl ketene thioacetal, ene- and diene acetals; potential four-carbon synthons by Braverman, Samuel, Cherkinsky, Marina, Nov, Eliahu, Sprecher, Milon

“…A novel and convenient procedure for the preparation of conjugated vinyl ketene thioacetals is described: it involves addition of CBr 4 to acrolein, followed…”
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