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A. V. Nemtarev

Bio: A. V. Nemtarev is an academic researcher from Russian Academy of Sciences. The author has contributed to research in topics: Alkyl & Phosphorane. The author has an hindex of 1, co-authored 1 publications receiving 10 citations.

Papers
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Journal ArticleDOI
07 Mar 2011
TL;DR: In this article, a new reaction in phosphorus chemistry, namely, the interaction of 2,2,2-trihalobenzo-1, 3, 2-dioxaphospholes with aryl(alkyl)acetylenes, leads to the formation of benzo[e]-1,2oxaphosphinine derivatives, or “phosphacoumarins.
Abstract: The account covers a new reaction in phosphorus chemistry, namely, the interaction of 2,2,2-trihalobenzo-1,3,2-dioxaphospholes with aryl(alkyl)acetylenes, which leads to the formation of benzo[e]-1,2-oxaphosphinine derivatives, or “phosphacoumarins.” The easy formation of a P-C bond and phosphoryl group, the ipso-substitution of the oxygen atom by the carbon one, and selective chlorination para to endocyclic oxygen are realized under mild conditions in this reaction. The ipso-substitution of a tertiary butyl group and a bromine atom also takes place in some cases.

11 citations


Cited by
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Journal ArticleDOI
TL;DR: A new class of aromatic metamorphosis in which benzofurans are converted into diverse six-membered oxaheterocycles has been developed and is composed of two reactions in one pot: manganese-catalyzed arylative or alkylative ring-opening of benz ofurans affording dianionic intermediates and subsequent trapping with multivalent heteroatom electrophiles.

31 citations

Journal ArticleDOI
TL;DR: In this paper, an intramolecular hydroarylation of aryl alkynylphosphonates (I) and (III) promoted by a gold/silver catalyst affords phosphacoumarins (II and (IV) in moderate to good yields via a 6-endo-dig cyclization.
Abstract: An intramolecular hydroarylation of aryl alkynylphosphonates (I) and (III) promoted by a gold/silver catalyst affords phosphacoumarins (II) and (IV), resp., in moderate to good yields via a 6-endo-dig cyclization.

29 citations

Journal ArticleDOI
TL;DR: This review emphasizes on the synthetic methods for the preparation of dialkyl 2-oxo-2H-1-benzo- pyran- 3-phosphonates and alkyl 1,2-benzoxaphosphorin-3-carboxylates.
Abstract: Coumarins are an important class of natural heterocyclic compounds that have attracted considerable synthetic and pharmacological interest due to their various biological activities. This review emphasizes on the synthetic methods for the preparation of dialkyl 2-oxo-2H-1-benzo- pyran-3-phosphonates and alkyl 1,2-benzoxaphosphorin-3-carboxylates. Their chemical properties as acceptors in conjugate addition reactions, [2+2] and [3+2] cycloaddition reactions are discussed.

12 citations

Journal ArticleDOI
TL;DR: In this article, 8,8'-Spirobi(chromano-1,2-oxaphosphinines) were obtained by the reaction between phosphorylated derivatives of spirodichromane and arylacetylenes with a high chemoselectivity.

4 citations

Journal ArticleDOI
TL;DR: Bis(benzo[e]-1,2-oxaphosphinin-2,oxid-4(7)-yl)butane (-benzene) derivatives were synthesized for the first time both on the basis of reactions of diacetylene with P,P, P-trihalobenzo-1,3,2dioxaphopholes.
Abstract: Bis(benzo[e]-1,2-oxaphosphinin-2-oxid-4(7)-yl)butane (-benzene) derivatives were synthesized for the first time both on the basis of reactions of diacetylene with P,P, P-trihalobenzo-1,3,2-dioxaphopholes and on the basis of reactions of bis(P,P,P-trihalobenzo-1,3,2-dioxaphosphol-5-yl)bytane (-benzene) with phenylacetylene.

4 citations