2078-71-9Relevant articles and documents
Synthesis and Structure of 1-Substituted Semithioglycolurils
Baranov, Vladimir V.,Galochkin, Anton A.,Kravchenko, Angelina N.,Makhova, Nina N.,Nelyubina, Yulia V.
, p. 2563 - 2571 (2020/09/07)
Two methods for the synthesis of previously unavailable 1-substituted semithioglycolurils were developed. These methods consist of the cyclocondensation of 1-substituted ureas with 4,5-dihydroxy- or 4,5-dimethoxyimidazolidine-2-thione or glyoxal, followed by the reaction of the resulting 1-substituted 4,5-dihydroxyimidazolidine-2-ones with HSCN in a two-step one-pot procedure. Two of the desired semithioglycolurils were obtained as conglomerates.
The ethylenically unsaturated group-containing isocyanate compound
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Paragraph 0031; 0131; 0135, (2019/01/04)
PROBLEM TO BE SOLVED: To provide a production method capable of obtaining an ethylenically unsaturated group-containing isocyanate compound with high yield, which is excellent in safety to human bodies or environments without using phosgene and in which the production processes and production facilities are simplified.SOLUTION: There is a method for producing an ethylenically unsaturated group-containing isocyanate compound which produces a compound having an ethylenically unsaturated bond and an isocyanate group in the molecule using an amino alcohol as a raw material, wherein the method has a step of producing a cyclic compound having a urethane bond in the molecule as an intermediate.
Synthesis of 2-monofunctionalized 2,4,6,8-tetraazabicyclo[3.3.0]octane-3,7- diones
Kravchenko,Maksareva,Belyakov,Sigachev,Chegaev,Lyssenko,Lebedev,Makhova
, p. 192 - 197 (2007/10/03)
New (1R*,5S*)-2-R-2,4,6,8-tetraazabicyclo[3.3.0]octane-3,7- diones containing the terminal carboxy or hydroxy group in the substituent R were synthesized by cyclocondensation of 4,5-dihydroxyimidazolidin-2-one with 1-R-ureas. Single-crystal X-ray diffraction analysis showed that 2-carboxyethyl-2,4,6,8-tetraazabicyclo[3.3.0]octane-3,7-dione crystallizes as a racemate.