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1

Novel chemical modifications at the 4-position of chromones. Synthesis and reactivity of 4H-chromene-4-spiro-5′-isoxazolines and related compounds

Vyacheslav Ya. Sosnovskikh, Boris I. Usachev, Aleksei Yu. Sizov, Mikhail I. Kodess

Journal:

Tetrahedron Letters

Year:

2004

Language:

english

File:

PDF, 269 KB

english, 2004

2

2-Polyfluoroalkylchromones. 8. 2-Trifluoromethyl- and 6-nitro-2-trifluoromethylchromones in reactions with amines

V. Ya. Sosnovskikh, B. I. Usachev

Journal:

Russian Chemical Bulletin

Year:

2001

Language:

english

File:

PDF, 252 KB

english, 2001

3

A simple and convenient synthesis of 3-[5-(trifluoromethyl)-1,2,3-triazol-4-yl]cinnamic acids from 4-aryl-6-(trifluoromethyl)-2H-pyran-2-ones and sodium azide

Boris I. Usachev, Sergey A. Usachev, Gerd-Volker Röschenthaler, Vyacheslav Ya. Sosnovskikh

Journal:

Tetrahedron Letters

Year:

2011

Language:

english

File:

PDF, 270 KB

english, 2011

4

ChemInform Abstract: 2-Polyfluoroalkylchromones. Part 8. 2-Trifluoromethyl- and 6-Nitro-2-trifluoromethylchromones in Reactions with Amines.

V. Ya. Sosnovskikh, B. I. Usachev

Journal:

Year:

2002

File:

PDF, 30 KB

2002

5

Nucleophilic trifluoromethylation of RF-containing 4-quinolones, 8-aza- and 1-thiochromones with (trifluoromethyl)trimethylsilane

Vyacheslav Ya. Sosnovskikh, Boris I. Usachev, Dmitri V. Sevenard, Gerd-Volker Röschenthaler

Journal:

Journal of Fluorine Chemistry

Year:

2005

Language:

english

File:

PDF, 221 KB

english, 2005

6

7-Polyfluoroalkylnorkhellins: synthesis and reactions with alkyl mercaptoacetates

Vyacheslav Ya Sosnovskikh, Boris I Usachev, Ivan I Vorontsov

Journal:

Year:

2003

Language:

english

File:

PDF, 290 KB

english, 2003

7

Synthesis of 2-(trifluoromethyl)-1,2-dihydro-4H-thieno[2,3-c]chromen-4-ones and 2-(trifluoromethyl)-4H-thieno[2,3-c]chromen-4-ones from 2-trifluoromethylchromones and ethyl mercaptoacetate

Vyacheslav Ya Sosnovskikh, Boris I Usachev, Dmitri V Sevenard, Gerd-Volker Röschenthaler

Journal:

Year:

2003

Language:

english

File:

PDF, 199 KB

english, 2003

8

Unexpected synthesis of dihydrothienocoumarin derivatives from 2-trifluoromethylchromones and ethyl mercaptoacetate

Vyacheslav Ya Sosnovskikh, Boris I Usachev, Dmitri V Sevenard, Enno Lork, Gerd-Volker Röschenthaler

Journal:

Tetrahedron Letters

Year:

2001

Language:

english

File:

PDF, 87 KB

english, 2001

9

Reactions of 7-polyfluoroalkylnorkhellins with alkyl mercaptoacetates: a simple synthesis of dihydrothienopsoralens and benzofuran derivatives of 2-oxa-7-thiabicyclo[3.2.1]octane

Vyacheslav Ya Sosnovskikh, Boris I Usachev

Journal:

Tetrahedron Letters

Year:

2001

Language:

english

File:

PDF, 69 KB

english, 2001

10

The first example of a preparative 1,4-perfluoroalkylation using (perfluoroalkyl)trimethylsilanes

V.Ya Sosnovskikh, D.V Sevenard, B.I Usachev, G.-V Röschenthaler

Journal:

Tetrahedron Letters

Year:

2003

Language:

english

File:

PDF, 141 KB

english, 2003

11

Synthesis of 2-aroylmethyl-2-polyfluoroalkylchroman-4-ones

V. Ya. Sosnovskikh, B. I. Usachev, A. Yu. Sizov

Journal:

Russian Chemical Bulletin

Year:

2004

Language:

english

File:

PDF, 231 KB

english, 2004

12

Synthesis and reactivity of 2-polyfluoroalkylchromene-4(4H)-thiones

B. I. Usachev, M. A. Shafeev, V. Ya. Sosnovskikh

Journal:

Russian Chemical Bulletin

Year:

2004

Language:

english

File:

PDF, 436 KB

english, 2004

13

Synthesis and some properties of 6-di(tri)fluoromethyl-and 5-di(tri)fluoroacetyl-3-methyl-1-phenylpyrano[2,3-c]pyrazol-4(1H)-ones

V. Ya. Sosnovskikh, M. A. Barabanov, B. I. Usachev, R. A. Irgashev, V. S. Moshkin

Journal:

Russian Chemical Bulletin

Year:

2005

Language:

english

File:

PDF, 429 KB

english, 2005

14

Spiro[4H-chromene-4,5′-isoxazolines] and related compounds: Synthesis and reactivities

V. Ya. Sosnovskikh, A. Yu. Sizov, B. I. Usachev, M. I. Kodess, V. A. Anufriev

Journal:

Russian Chemical Bulletin

Year:

2006

Language:

english

File:

PDF, 450 KB

english, 2006

15

2-Trif luoromethyl-4H-thiochromen-4-one and 2-trif luoromethyl-4H-thiochromene-4-thione: Synthesis and reactivities

B. I. Usachev, M. A. Shafeev, V. Ya. Sosnovskikh

Journal:

Russian Chemical Bulletin

Year:

2006

Language:

english

File:

PDF, 319 KB

english, 2006

16

First example of regioselective nucleophilic 1,6-addition of trimethyl(trifluoromethyl)silane to 4H-chromene derivatives

V. Ya. Sosnovskikh, B. I. Usachev, M. N. Permyakov, D. V. Sevenard, G.-V. Röschenthaler

Journal:

Russian Chemical Bulletin

Year:

2006

Language:

english

File:

PDF, 342 KB

english, 2006

17

Trifluoroacetylation of ethyl 2,4-dioxopentanoate. The first synthesis of 4-oxo-6-(trifluoromethyl)-4H-pyran-2-carboxylic acid and its derivatives

B. I. Usachev, I. A. Bizenkov, V. Ya. Sosnovskikh

Journal:

Russian Chemical Bulletin

Year:

2007

Language:

english

File:

PDF, 222 KB

english, 2007

18

New derivatives of 6-phenylcomanic acid

B. I. Usachev, D. L. Obydennov, M. I. Kodess, G. -V. Röschenthaler, V. Ya. Sosnovskikh

Journal:

Russian Chemical Bulletin

Year:

2009

Language:

english

File:

PDF, 264 KB

english, 2009

19

Synthesis and some properties of 2-(polyfluoroalkyl)chroman-4-ols and 2-(polyfluoroalkyl)chroman-4-ones

V. Ya. Sosnovskikh, R. A. Irgashev, B. I. Usachev

Journal:

Russian Chemical Bulletin

Year:

2009

Language:

english

File:

PDF, 339 KB

english, 2009

20

First synthesis of 4-oxo-6-trifluoromethyl-4H-thiopyran-2-carboxylic acid and its derivatives

B. I. Usachev, S. A. Usachev, G.-V. Röschenthaler, V. Ya. Sosnovskikh

Journal:

Russian Chemical Bulletin

Year:

2010

Language:

english

File:

PDF, 214 KB

english, 2010

21

A simple and highly efficient synthesis of N-phenyl-2-polyfluoroalkyl-4-quinolones from 2-anilinoacetophenone and RFCO2Et

Boris I. Usachev, Vyacheslav Ya. Sosnovskikh

Journal:

Journal of Fluorine Chemistry

Year:

2004

Language:

english

File:

PDF, 81 KB

english, 2004

22

Regioselective solvent-sensitive reactions of 6-(trifluoromethyl)comanic acid and its derivatives with phenylhydrazine

Boris I. Usachev, Dmitrii L. Obydennov, Mikhail I. Kodess, Vyacheslav Ya. Sosnovskikh

Journal:

Tetrahedron Letters

Year:

2009

Language:

english

File:

PDF, 291 KB

english, 2009

23

Reactions of aromatic methyl ketimines with halonitriles as a new route to pyrimidines with two polyhaloalkyl groups

Vyacheslav Ya Sosnovskikh, Boris I Usachev, Gerd-Volker Röschenthaler

Journal:

Year:

2002

Language:

english

File:

PDF, 106 KB

english, 2002

24

2-Polyfluoroalkylchromones. 5. Nitration and chlorination of 2-trifluoromethylchromones

V. Ya. Sosnovskikh, B. I. Usachev

Journal:

Russian Chemical Bulletin

Year:

2000

Language:

english

File:

PDF, 234 KB

english, 2000

25

Trifluoroacetylation of 2-acetyldimedone

V. Ya. Sosnovskikh, B. I. Usachev, E. A. Bogdanov

Journal:

Russian Chemical Bulletin

Year:

2001

Language:

english

File:

PDF, 228 KB

english, 2001

26

2-Polyfluoroalkylchromones. 6. Synthesis of substituted 2-morpholino-2-trifluoromethylchroman-4-ones

V. Ya. Sosnovskikh, B. I. Usachev

Journal:

Russian Chemical Bulletin

Year:

2001

Language:

english

File:

PDF, 240 KB

english, 2001

27

2-Polyfluoroalkylchromones. 7. Reactions of 6-substituted 2-tetra- and 2-pentafluoroethylchromones with 2-aminoethanol

V. Ya. Sosnovskikh, B. I. Usachev, A. P. Safronov

Journal:

Russian Chemical Bulletin

Year:

2001

Language:

english

File:

PDF, 247 KB

english, 2001

28

2-Polyfluoroalkylchromones. 13. Synthesis and nitration of 6,8-dibromo-2-trifluoromethylchromone

V. Ya. Sosnovskikh, B. I. Usachev

Journal:

Russian Chemical Bulletin

Year:

2002

Language:

english

File:

PDF, 236 KB

english, 2002

29

Synthesis of 3-alkylamino-3-(2-hydroxyaryl)-1-polyfluoroalkylprop-2-en-1-ones and 2-polyfluoroalkyl-4H-chromen-4-imines

V.Ya. Sosnovskikh, B.I. Usachev

Journal:

Russian Chemical Bulletin

Year:

2004

Language:

english

File:

PDF, 460 KB

english, 2004

30

Reactions of 1,3,3-trimethyl-3,4-dihydroisoquinolines with polyhaloalkanonitriles

V. Ya. Sosnovskikh, B. I. Usachev, Yu. V. Shklyaev

Journal:

Russian Chemical Bulletin

Year:

2004

Language:

english

File:

PDF, 283 KB

english, 2004

31

A convenient synthesis of 4(5)-(2-hydroxyaroyl)-5(4)-trifluoromethyl-1,2,3-triazoles from 2-trifluoromethylchromones and chromen-4-imines

Vyacheslav Ya. Sosnovskikh, Boris I. Usachev

Journal:

Mendeleev Communications

Year:

2002

Language:

english

File:

PDF, 96 KB

english, 2002

32

Photochemical properties of photosystem 1 immobilized in a mesoporous semiconductor matrix

V. V. Nikandrov, Ya. V. Borisova, E. A. Bocharov, M. A. Usachev, G. V. Nizova, V. A. Nadtochenko, E. P. Lukashev, B. V. Trubitsin, A. N. Tikhonov, V. N. Kurashov, M. D. Mamedov, A. Yu. Semenov

Journal:

High Energy Chemistry

Year:

2012

Language:

english

File:

PDF, 316 KB

english, 2012

33

Regioselective synthesis of trifluoromethylated 3-(pyrazolyl)indoles on the basis of 6-(trifluoromethyl)comanic acid

Boris I. Usachev, Dmitrii L. Obydennov, Vyacheslav Ya. Sosnovskikh

Journal:

Journal of Fluorine Chemistry

Year:

2012

Language:

english

File:

PDF, 512 KB

english, 2012

34

2-Cyano-6-(trifluoromethyl)-4H-pyran-4-one: A novel versatile CF3-containing building block

Boris I. Usachev, Dmitrii L. Obydennov, Gerd-Volker Röschenthaler, Vyacheslav Ya. Sosnovskikh

Journal:

Journal of Fluorine Chemistry

Year:

2012

Language:

english

File:

PDF, 314 KB

english, 2012

35

Reaction of 2-Polyfluoroalkylchromones with 1,3,3-Trimethyl-3,4-dihydroisoquinolines and Methylketimines as a Direct Route to Zwitterionic Axially Chiral 6,7-Dihydrobenzo[ a ]quinolizinium Derivatives and 2,6-Diaryl-4-polyfluoroalkylpyridines

Sosnovskikh, Vyacheslav Ya., Usachev, Boris I., Sizov, Aleksei Yu., Vorontsov, Ivan I., Shklyaev, Yurii V.

Journal:

Organic Letters

Year:

2003

Language:

english

File:

PDF, 74 KB

english, 2003

36

New derivatives of dehydroacetic acid: synthesis of 2-polyfluoroalkyl-7-methylpyrano[4,3-b]pyran-4,5-diones

Vyacheslav Ya. Sosnovskikh, Boris I. Usachev, Andrei G. Blinov, Mikhail I. Kodess

Journal:

Mendeleev Communications

Year:

2001

Language:

english

File:

PDF, 109 KB

english, 2001

37

Unexpected influence of tetra- and pentafluoroethyl groups on the direction of reactions of 2-polyfluoroalkylchromones with 2-aminoethanol

Vyacheslav Ya. Sosnovskikh, Boris I. Usachev

Journal:

Mendeleev Communications

Year:

2000

Language:

english

File:

PDF, 151 KB

english, 2000

38

A novel, two-step synthesis of 4-pyridone-3-carboxamides from 2-cyano-4-pyrones

Obydennov, Dmitrii L., Sidorova, Ekaterina S., Usachev, Boris I., Sosnovskikh, Vyacheslav Ya.

Journal:

Tetrahedron Letters

Year:

2013

Language:

english

File:

PDF, 294 KB

english, 2013

39

Convenient Synthesis of Ethyl 4-Aryl-6-(trifluoromethyl)-2-oxo-2 H -pyran-3-carboxylates and 4-Aryl-6-(trifluoromethyl)-2 H -pyran-2-ones: Novel Highly Reactive CF 3 -Containing Building Blocks

Usachev, Boris I., Obydennov, Dmitrii L., Röschenthaler, Gerd-Volker, Sosnovskikh, Vyacheslav Ya.

Journal:

Organic Letters

Year:

2008

Language:

english

File:

PDF, 107 KB

english, 2008

40

Regioselective synthesis of 2- and 5-trifluoromethyl-or 2- and 5-difluoromethylpyrazolo[1,5-c]pyrimidines based on 7,7,7-trifluoro-or 7,7-difluoro-2,4,6-trioxoheptanoic and 6-trifluoromethyl-or 6-difluoromethylcomanic acids

B. I. Usachev, D. L. Obydennov, V. Ya. Sosnovskikh

Journal:

Russian Chemical Bulletin

Year:

2012

Language:

english

File:

PDF, 367 KB

english, 2012

41

Unusual Reaction of 2-(Trifluoromethyl)-1,2-dihydro-3λ 6 -thieno- [2,3- c ]chromen-3,3,4-triones with Hydrazine as a New Route to 3-Hydrazinopyridazine Derivatives

Sosnovskikh, Vyacheslav Ya., Usachev, Boris I., Vorontsov, Ivan I.

Journal:

Journal of Organic Chemistry

Year:

2002

Language:

english

File:

PDF, 130 KB

english, 2002

42

Synthesis of 3-(trifluoromethyl)indeno[2,1-c]pyran-1,9-diones from 4-aryl-3-carbethoxy-6-(trifluoromethyl)-2-pyrones and their reaction with sodium azide leading to new carbostyril derivatives

Usachev, Sergey A., Usachev, Boris I., Sosnovskikh, Vyacheslav Ya.

Journal:

Year:

2014

Language:

english

File:

PDF, 176 KB

english, 2014

43

A Novel and Simple Synthesis of 2-(Trifluoromethyl)-4 H -thiochromen-4-ones

Usachev, Boris I., Sosnovskikh, Vyacheslav Ya., Shafeev, Mikhail A., Röschenthaler, Gerd-Volker

Journal:

Phosphorus Sulfur and Silicon and the Related Elements

Year:

2005

Language:

english

File:

PDF, 115 KB

english, 2005

44

A Novel Redox Reaction between 8-Aza-5,7-dimethyl-2-trifluoromethylchromone and Alkyl Mercaptoacetates. Facile Synthesis of CF 3 -Containing 2-Pyridone Derivatives

Sosnovskikh, Vyacheslav Ya., Barabanov, Mikhail A., Usachev, Boris I.

Journal:

Journal of Organic Chemistry

Year:

2004

Language:

english

File:

PDF, 183 KB

english, 2004

45

A Novel Redox Reaction between 8-Aza-5,7-dimethyl-2-trifluoromethylchromone and Alkyl Mercaptoacetates

Sosnovskikh, Vyacheslav Ya., Barabanov, Mikhail A., Usachev, Boris I.

Journal:

Organic Letters

Year:

2003

Language:

english

File:

PDF, 69 KB

english, 2003

46

Synthesis of 6H,7H-pyrido[2,1-a]isoquinolinium zwitterions from 6-nitro-2-polyfluoroalkylchromones and 1,3,3-trimethyl-3,4-dihydroisoquinolines

Sosnovskikh, V. Ya., Usachev, B. I., Vshivkova, T. S., Shklyaev, Yu. V.

Journal:

Russian Chemical Bulletin

Year:

2014

Language:

english

File:

PDF, 334 KB

english, 2014

47

A Novel and Simple Synthesis of Substituted Anilines by Reaction of 2-Polyfluoroalkylchromones with (Isopropylidene)isopropylamine

Sosnovskikh, Vyacheslav Ya., Usachev, Boris I., Sizov, Aleksei Yu.

Journal:

Year:

2004

Language:

english

File:

PDF, 56 KB

english, 2004

48

A Simple and Efficient Synthesis of 2-Methyl-2-trifluoromethylchroman-4-ones from 2-Trifluoromethyl-4 H -chromen-4-imines and Malonic Acid

Sosnovskikh, Vyacheslav Ya., Usachev, Boris I.

Journal:

Year:

2002

Language:

english

File:

PDF, 55 KB

english, 2002

49

A Novel Synthesis of 2-Trichloromethylchromones and 7-Trichloromethylnorkhellin

Sosnovskikh, Vyacheslav Ya., Usachev, Boris I.

Journal:

Year:

2002

Language:

english

File:

PDF, 53 KB

english, 2002

50

A Simple One-Pot Synthesis of 2,6-Disubstituted 4-(Polyfluoroalkyl)pyridines and -pyrimidines by Reaction of 2-Polyfluoroalkylchromones with Aromatic Methyl Ketimines and Amidines

Sosnovskikh, Vyacheslav Ya., Usachev, Boris I., Sizov, Aleksei Yu., Barabanov, Mikhail A.

Journal:

Year:

2004

Language:

english

File:

PDF, 93 KB

english, 2004