Benzamidines in cyclocondensation with hexafluoroacetone and methyl trifluoropyruvate acyl- and ethoxycarbonylimines
作者:V. B. Sokolov、A. Yu. Aksinenko、T. A. Epishina、T. V. Goreva、I. V. Martynov
DOI:10.1007/s11172-005-0281-9
日期:2005.2
The reactions of hexafluoroacetone and methyl trifluoropyruvate acyl- and ethoxycarbonylimines with benzamidines afford fluoro containing heterocycles of four structural types: dihydrotriazines, dihydrotriazinones, imidazoles, and imidazooxazoles.
作者:V. B. Sokolov、T. V. Goreva、T. A. Epishina、A. Yu. Aksinenko
DOI:10.1007/s11172-009-0210-4
日期:2009.7
Previously unknown fluorinated α-alkoxy(aryloxy)alkylisocyanates, the esters of α-alkoxy and α-aryloxy-2-isocyanato-3,3,3-trifluoropropionic acids, were obtained. The synthetic potential of these compounds were demonstrated in reactions with anilines leading to 2-substituted 3,3,3-trifluoroalanine derivatives.
Synthesis of optically pure (R)- and (S)-α-trifluoromethyl-alanine
作者:Pierfrancesco Bravo、Silvia Capelli、Stefano Valdo Meille、Fiorenza Viani、Matteo Zanda、Valery P. Kukhar、Vadim A. Soloshonok
DOI:10.1016/s0957-4166(00)86276-x
日期:1994.10
(+)-(R)- and (-)-(S)-3,3,3-trifluoro-2-methyl-alanine (1) were synthesized from (+)-(R)-methyl-p-tolylsulphoxide (5) and N-alkoxycarbonylimino derivatives 4 of methyl 3,3,3-trifluoropyruvate (3). The absolute configuration was determined by X-ray analyses of two synthetic intermediates (2S,R(S))-6a and (2R,R(S))-6c.
作者:V. B. Sokolov、T. V. Goreva、T. A. Epishina、A. Yu. Aksinenko
DOI:10.1007/s11172-007-0354-z
日期:2007.11
Earlier unknown representatives of fluorine-containing α-chloroalkylisocyanates, viz., esters of 2-chloro-3,3,3-trifluoro-2-isocyanatopropionic acid, were obtained. Synthetic potentialities of these compounds in the preparation of 2-substituted derivatives of 3,3,3-trifluoroalanine were demonstrated.