2-Oxo-2-polyfluoroalkylethane-1-sulfones and -sulfamides in the three-component reactions leading to pyrimidine derivatives
作者:Vadim M. Timoshenko、Yuriy M. Markitanov、Yuriy O. Salimov、Yuriy G. Shermolovich
DOI:10.3998/ark.5550190.p008.582
日期:——
Oxo-2-polyfluoroalkylethane-1-sulfones and -sulfamides undergo Biginelli reaction with aryl aldehydes and (thio)urea to give 4-hydroxy-4-polyfl uoroalkyl-5-sulfonyl-6-aryl- tetrahydropyrimidin-2(1 H)-(thi)ones, whereas three-componentreaction with urea and trialkyl orthoformate provides 4-hydroxy-4-polyfluoroalkyl-5-sulfonyl-3,4-dihydropyrimidin-2(1 H)- ones. Some chemical properties of the synthesized
Synthesis of Fluorinated Cyclobutenes Based on β-Polyfluoroalkyl β-Keto Sulfones, Sulfamides, and Phosphonates
作者:Vadim M. Timoshenko、Yuriy M. Markitanov、Yuriy G. Shermolovich
DOI:10.1002/hc.21101
日期:2013.9
β-Polyfluoroalkyl β-keto sulfones, sulfamides, and phosphonates react under mild conditions with dimethyl acetylenedicarboxylate and triphenyl phosphine to yield via the intramolecular Wittig reaction, correspondingly, 4-sulfonyl- (4-sul-famoyl-) (4-phosphonyl-) 3-(polyfluoroalkyl)cyclobut-2-ene-1,2-dicarboxylates.
2-Oxo-2-polyfluoroalkylethane-1-sulfones and -sulfamides in the Biginelli and ‘retro-Biginelli’ reactions
作者:Vadim M. Timoshenko、Yuriy M. Markitanov、Yuriy G. Shermolovich
DOI:10.1016/j.tetlet.2011.09.143
日期:2011.12
2-Oxo-2-polyfluoroalkylethane-1-sulfones and -sulfamides react with aryl aldehydes and urea under Biginelli reaction conditions to yield 4-hydroxy-4-polyfluoroalky1-5-sulfony1-6-aryl-tetrahydropyrimidinones. The latter compounds on reaction with hexamethylenetetramine (HMTA) under thermal conditions undergo 'retro-Biginelli' reaction involving replacement of the 6-aryl substituent of the pyrimidinone cycle with a hydrogen atom donated by HMTA. Hexamethylenetetramine was employed for the first time in place of formaldehyde in the reported one-step Biginelli protocol for the synthesis of fluorinated sulfonyl-containing 6-unsubstituted tetrahydropyrimidinones. (C) 2011 Elsevier Ltd. All rights reserved.
SHIPOV, A. G.;BAUKOV, YU. I., ZH. OBSHCH. XIMII, 1984, 54, N 8, 1342-1360