4719-04-4Relevant articles and documents
Regioselective synthesis of 1,5-Diaryl-2-(Hydroxyalkyl)-8-Methylglycolurils
Antonova,Baranov,Nelyubina,Kravchenko
, p. 503 - 513 (2014)
The cyclocondensation of N-methylurea with derivatives of tetrahydroimidazooxazolone, tetrahydro-imidazooxazinone, dihydroimidazooxazinone, and tetrahydroimidazooxazepinone was studied for the first time. It was shown that the reactions take place with high regioselectivity, are regular in character, and lead to the formation of previously inaccessible 1,5-diaryl-2-(hydroxyalkyl)-8-methylglycolurils with high yields.
HEXAHYDROTRIAZINES, SYNTHESIS AND USE
-
Paragraph 0021, (2013/05/23)
Methods for making asymmetrical triazines are provided. The methods comprise first forming a mixture of at least two primary amines then reacting the mixture with an aldehyde. Methods for removing sulfides from hydrocarbon streams are also provided. The triazines may be added to the hydrocarbon stream in a molar ratio of triazine:H2S of about 10:1 to about 1:2 wherein R1, R2, and R3 are chosen from alkyls, hydroxyl-substituted alkyls, and alkoxy-substituted alkyl of 1 to 10 carbon atoms, with the proviso that R1, R2, and R3 are not all the same.
2-(1,3,5-Dithiazinan-5-yl)ethanol heterocycles, structure and reactivity
Gálvez-Ruiz, Juan Carlos,Jaen-Gaspar, Javier C.,Castellanos-Arzola, Indira G.,Contreras, Rosalinda,Flores-Parra, Angelina
, p. 2269 - 2285 (2007/10/03)
Treatment of 2-(1,3,5-dithiazinan-5-yl)ethanol (1), 2-(1,3,5-dithiazinan-5- yl)-1-phenylethanol (2), 2-(1,3,5-dithiazinan-5-yl)-1-methylethanol (3) and 2-(1,3,5-dithiazinan-5-yl)-2-methyl-1-phenylethanol (4) with TsCl and NEt 3 in CH2Cl2 afforded the corresponding 3-tosyl-1,3-oxazolidine derivatives (5-8), whereas tosylation of 1-4 in the presence of NHMe3Cl gave the corresponding O-tosyl-2-(1,3,5- dithiazinan-5-yl)ethanol derivatives (11-14). The direct preparation of 5 and 7 from formaldehyde and N-tosylethanolamine (9) or N-tosyl-2-propanolamine was not successful. Reactions of 1 or 3 with benzylamine furnish 1,3,5-tribenzyl-1,3,5- triazinane. Heating of 1 and 2 affords the corresponding 1,3,5-tri(2- hydroxyethyl)-1,3,5-triazinanes. X-Ray diffraction studies of compounds (1-9 and 11) are reported.