10543-60-9Relevant articles and documents
Novel Method for O-Acetylation of Cholesterol, Allobetulin, and Betulin
Arrous, Salah,Boudebouz, Imene,Bakibaev, Abdigali,Hoang, Phuoc,Parunov
, p. 482 - 484 (2019)
Primary and secondary triterpene alcohols were acetylated for the first time using tetraacetylglycoluril (TAGU). Cholesterol, allobetulin, and betulin acetates were obtained in high yields. The acetylation used p-TsOH or TFA in refluxing CHCl3. TFA was found to be an effective acetylation catalyst.
1,6-Dibenzylglycoluril for synthesis of deprotected glycoluril dimer
Stancl, Marek,Khan, Muhammad S.A.,Sindelar, Vladimir
experimental part, p. 8937 - 8941 (2011/12/01)
1,6-Dibenzylglycoluril is not accessible via classical condensation reaction between substituted urea and glyoxal. In this paper 1,6-dibenzylglycoluril was successfully prepared by alkylation of 1,6-diacetylglycoluril with benzylbromide for the first time. 1,6-Dibenzylglycoluril reacted with formaldehyde to give tetrabenzylglycoluril dimer. Deprotection of this dimer and the previously reported o-xylyleneglycoluril dimer was achieved by dissolving metal reduction, whereas propyleneglycoluril dimer was deprotected by action of potassium persulfate.
Methodes de preparation de derives nitres et nitroacetyles du glycolurile (I)
Boileau, J.,Wimmer, E.,Carail, M.,Gallo, R.
, p. 465 - 469 (2007/10/02)
A procedure for preparing nitro and nitroacetyl derivatives of glycoluril is described, starting from tetraacetylglycoluril (TAGU).The method proceeds by nitrodeacetylation and (or) hydrolysis.New compounds have been prepared : mononitrodiacetylglycoluril (MONDAGU), dinitrodiacetylglycoluril (DINDAGU) and mononitroglycoluril (MONGU).A general synthetic scheme is proposed and discussed.Some properties of the new derivatives are presented.
