Synthesis, Acid–Base Properties, and Sulfonylation of Dialkyl 5-Amino-2-hydroxy-4,6-dimethylisophtalates
摘要:
Dialkyl 5-amino-2-hydroxy-4,6-dimethylisophthalates were synthesized for the first time by the reduction of the corresponding nitroso derivatives with sodium dithionite. The pK(a)and pK(BH+)values of the synthesized compounds were determined and taken into account to find conditions for their sulfonylation withp-toluenesulfonyl chloride andp-acetamidobenzenesulfonyl chloride. As a result, previously unknown sulfonylated derivatives of substituted aminoisophthalates with potential antimicrobial properties were obtained. The composition and structure of the products were confirmed by IR, UV, and(1)H NMR spectroscopy and mass spectrometry. The geometric structure of the sulfonylated compounds was established by DFT calculations at the BP86-D3/def2-SVP level of theory. The antibacterial effect of 5-(4-acetamidobenzenesulfonamido)-2-hydroxy-4,6-dimethylisophthalate was revealed.
Catalytic hydrogenation of persubstituted p-nitrosophenols
摘要:
Catalytic hydrogenation of dialkyl 2-hydroxy-4,6-dimethyl-5-nitrosobenzene-1,3-dicarboxylates over Pd/C gave the corresponding previously unknown dialkyl 5-amino-2-hydroxy-4,6-dimethylbenzene-1,3-dicarboxylates. The first-order rate constants for the hydrogenation process were found to be linearly related to steric constants of the alkyl groups.
Catalytic hydrogenation of persubstituted p-nitrosophenols
作者:D. G. Slashchinin、M. S. Tovbis、E. V. Root、V. E. Zadov、V. A. Sokolenko
DOI:10.1134/s1070428010040111
日期:2010.4
Catalytic hydrogenation of dialkyl 2-hydroxy-4,6-dimethyl-5-nitrosobenzene-1,3-dicarboxylates over Pd/C gave the corresponding previously unknown dialkyl 5-amino-2-hydroxy-4,6-dimethylbenzene-1,3-dicarboxylates. The first-order rate constants for the hydrogenation process were found to be linearly related to steric constants of the alkyl groups.
Synthesis, Acid–Base Properties, and Sulfonylation of Dialkyl 5-Amino-2-hydroxy-4,6-dimethylisophtalates
作者:I. G. Povarov、N. A. Shilenkov、P. O. Krasnov、G. A. Suboch、M. S. Tovbis
DOI:10.1134/s1070428020080126
日期:2020.8
Dialkyl 5-amino-2-hydroxy-4,6-dimethylisophthalates were synthesized for the first time by the reduction of the corresponding nitroso derivatives with sodium dithionite. The pK(a)and pK(BH+)values of the synthesized compounds were determined and taken into account to find conditions for their sulfonylation withp-toluenesulfonyl chloride andp-acetamidobenzenesulfonyl chloride. As a result, previously unknown sulfonylated derivatives of substituted aminoisophthalates with potential antimicrobial properties were obtained. The composition and structure of the products were confirmed by IR, UV, and(1)H NMR spectroscopy and mass spectrometry. The geometric structure of the sulfonylated compounds was established by DFT calculations at the BP86-D3/def2-SVP level of theory. The antibacterial effect of 5-(4-acetamidobenzenesulfonamido)-2-hydroxy-4,6-dimethylisophthalate was revealed.