Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Yuri G. Gololobov"'
Autor:
Viktor N. Khrustalev, Sergei A. Andronati, Sergei V. Barabanov, Irina Yu. Krasnova, Yuri G. Gololobov, Viktor I. Pavlovsky
Publikováno v:
Tetrahedron Letters. 55:4879-4882
It is demonstrated that phosphorotropic migration occurs in the C 3 N C 5 triad of 1,4-benzodiazepines, which is accompanied by the isomerization of Ph 2 P O C 3 to Ph 2 P(O) C 5 .
Publikováno v:
Comptes Rendus Chimie. 13:900-911
This review focuses on synthesis and properties of 1,3-phosphorus-containing zwitterions that have at the anionic center cyano-group and either ester (type one) or carbamate (type two) moieties. Zwitterions belonging to type one possess dual nucleoph
Autor:
Zoija A. Starikova, Yuri G. Gololobov, Pavel V. Petrovskii, I. A. Garbuzova, Olesya A. Linchenko
Publikováno v:
Heteroatom Chemistry. 18:108-115
Reactions of NCCH2COOMe 1a and CH2(CN)21b with 2,4-dinitrofluorobenzene 2 at the presence of Et3 N result in deeply colored crystalline stable salts 4a,4b with anions that contain a system of conjugated bonds. Similar reaction of 2 with phosphorus-co
Autor:
Ludger Ernst, Peter G. Jones, Atilla Karaçar, Matthias Freytag, Olga V. Dovgan, Yuri G. Gololobov, Pavel V. Petrovskii, Reinhard Schmutzler, S. Okucu, Irina Yu. Krasnova
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 177:1677-1680
The reactions of the zwitterionic species 1 with ortho -substituted aryl isocyanates proceed in an unusual way, resulting in the formation of the P-containing carbamates 3. In the latter (except for X=F) the CH 2 P protons are anisochronous and give
Publikováno v:
Heteroatom Chemistry. 13:36-45
Pyridinium and isoquinolinium ylides (7 and 12) derived from malonic ester react in an unusual manner with isocyanates giving the new pyridinium ylide (9) and the new isoquinolinium ylide (14). C N Migration of the COOEt group takes place at room tem
Autor:
Aleхander S. Peregudov, Victor N. Khrustalev, Pavel V. Petrovskii, Sergei V. Barabanov, Yuri G. Gololobov
Publikováno v:
Tetrahedron Letters. 52:6713-6715
We report here a new and efficient synthesis of substituted indolines via reaction of dimethyl 2,4-dinitrophenyl-(2,4,6-trinitrophenyl)malonates with bis(dimethylamino)methane.
Autor:
V. A. Dyatlov, I. R. Rustamov, V. I. Maleev, Yuri G. Gololobov, Vyacheslav V. Kireev, T. A. Grebeneva
Publikováno v:
ChemInform. 45
Oxalyl chloride is shown to be the best chlorinating agent for the synthesis of title compound (II) which is used for the preparation of esters (VII) and (IX).
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 144:355-358
The recent developments in the chemistry of P-zwitterions 2 are discussed. They include unusual reactions of 2 with HgCl2, ArN3, TosNCO and Alk(Ar)NCX (X=O,S). The insertion reactions of alkyiso(thio)cyanates into C-C bond are considered. A novel typ
Autor:
Pavel V. Petrovskii, Irina Kuzminseva, Viktor Khroustalyov, D. Vaughan Griffiths, Yuri G. Gololobov
Publikováno v:
Heteroatom Chemistry. 10:644-650
Publikováno v:
Tetrahedron Letters. 38:7437-7440
Interaction of zwitter-ions 1 with arylisocyanates (a-e) and phenylisothiocyanate leads to the stable zwitter-ions 3(a-e) and 4 which probably represent rearrangement products of the initially formed adducts 2. The molecular structure of compounds 4