621-12-5Relevant articles and documents
One-pot preparation of carbamoyl benzotriazoles and their applications in the preparation of ureas, hydrazinecarboxamides and carbamic esters
Mao, Hui,Liu, Huili,Tu, Yawei,Zhong, Zhiyun,Lv, Xin,Wang, Xiaoxia
, p. 13 - 22 (2016/02/18)
Carbamoyl benzotriazoles were conveniently synthesized in one-pot from carboxylic acids, diphenyl phosphorazidate (DPPA) and 1H-benzotriazole (BtH). The reactivity and applications of carbamoyl benzotriazoles were also explored. Carbamoyl benzotriazoles react smoothly with amino acids, hydrazines and alcohols, thus providing facile access to the corresponding ureas, hydrazinecarboxamides and carbamic esters, respectively, in good to excellent yields.
Synthesis and characterization of new diazenecarboxamide ligands using a selective adduct formation with B(C6F5)3
Escobar, Manuel A.,Valderrama, Mauricio,Daniliuc, Constantin G.,Rojas, Rene S.
, p. 194 - 201 (2016/02/26)
The synthesis and structure of new N-(2,6-diisopropylphenyl)-2-phenyldiazenecarboxamide (L2) and N-(2,6-diisopropylphenyl)-2 (perfluorophenyl) diazenecarboxamide (L3) ligands are described. The subsequent reactions of ligands L1
Synthesis of unsymmetrical ureas and S-thiocarbamates under catalyst-free conditions in a [BMIM]BF4 ionic liquid
Hosseinzadeh, Rahman,Tajbakhsh, Mahmood,Aghili, Nora
, p. 175 - 182 (2015/05/27)
Unsymmetrical ureas and Sthiocarbamates were prepared in good to excellent yields by direct condensation of phenylurea with amines and thiols in 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4) without the addition of any additives. The [BMIM]BF4 ionic liquid is a mild medium and can be recycled and reused several times.
THE CHAIN LENGTHENING OF ALIPHATIC ALDEHYDES WITH THE AID OF "NUCLEOPHILIC CARBENE"
Doleschall, Gabor
, p. 4183 - 4186 (2007/10/02)
The addition of "nucleophilic carbene" on 1,2,4-triazole bases (2) and aldehydes is decisively influenced by the anion present. 5-(α-Hydroxyalkyl)-1,2,4-triazolium chlorides, formed in the addition reaction of 3-methylthio-1,4-diphenyl-1,2,4-triazolium chloride (1c) with aldehydes, can be easily reduced to 5-alkyl-1,2,4-triazolium iodides (5).Reduction of these with NaBH4 affords aldehydes by acidic hydrolysis or carboxylic acids by alkaline hydrolysis, the carbon chain of which has been lengthened by one CH2 group, as compared to the starting aldehyde.