An Efficient, One-Pot Synthesis of 3-Alkyl or Aryl Sydnoneimines
摘要:
In a ''one-pot'' process, a variety of 3-alkyl and 3-aryl sydnoneimine hydrochlorides can be prepared in high yield, under mild conditions, by nitrosation of the corresponding aminoacetonitrile with isoamyl nitrite in diethyl ether followed by cyclization with HCl gas.
作者:A. S. Samarskaya、I. A. Cherepanov、I. A. Godovikov、V. N. Kalinin
DOI:10.1134/s0012500815080017
日期:2015.8
A preparative method of synthesis of N6-α-haloacyl sydnoneimine derivatives has been developed. These compounds are convenient intermediates for the synthesis of a large variety of N6-α-amino-substituted and N6-α-thio-substituted acyl derivatives of sydnoneimines. The obtained sydnoneimine derivatives may be of interest in the context of searching for new physiologically active compounds.
N6 - tert -Butoxycarbonyl derivatives of sydnone imines: Preparation and synthetic use
作者:Ilya A. Cherepanov、Alina S. Samarskaya、Ivan A. Godovikov、Konstantin A. Lyssenko、Anastasia A. Pankratova、Valery N. Kalinin
DOI:10.1016/j.tetlet.2018.01.019
日期:2018.2
A highly efficient gram-scale method for the C(4)-functionalization of sydnone imine hydrochloride derivatives was developed. This new approach was realized through consecutive reactions including the preparation of a C(3)-substituted N6-tert-butoxycarbonyl sydnone imine derivative, deprotonation with n-BuLi and reaction of the lithiated-intermediate with an electrophilic agent, and removal of the
N-ferrocenylcarbonyl derivatives of sydnone imines: synthesis, modification, growth-regulating and antidote against herbicide “Zinger” activities
作者:Natalia V. Kalganova、Natalia G. Frolova、Ivan A. Godovikov、Alexander F. Smol'yakov、Dmitriy A. Lapshin、Iliya A. Cherepanov
DOI:10.1016/j.jorganchem.2023.122975
日期:2024.2
The first N6-ferrocenylcarbonyl derivatives of sydnone imines were synthesized by the reaction of sydnone imine hydrochlorides with ferrocenoyl chloride. The possibility of deprotonation of C(4)-H of the oxadiazole ring in N6-ferrocenylcarbonyl derivatives of sydnone imines under the action of n-butyllithium was demonstrated. The reactivity of 4-lithio derivatives was studied and methods of their functionalization