N-[1-(Benzotriazol-1-yl)alkyl]amides, versatile amidoalkylation reagents. Part 4. A New Synthetic Route to 4H-1,3-Oxazines
摘要:
A variety of 2,4,6-tri- and 2,4,5,6-tetrasubstituted 4H-1,3-oxazines (7 a-i) were synthesized in excellent yields by the reaction of acetylenes (5) in the presence of aluminum chloride with N-[1-(benzotriazol-1-yl) alkyl]amides 4, themselves readily prepared from benzotriazole (1) with amides (2) and aldehydes (3).
Elimination of benzotriazolyl group in N-(α-benzotriazol-1-ylalkyl)amides and N-(α-benzotriazol-1-ylalkyl)sulfonamides: their self-coupling and cross-coupling reactions with carbonyl compounds
作者:Xiaoxia Wang、Yongjun Liu、Yongmin Zhang
DOI:10.1016/j.tet.2003.08.039
日期:2003.10
The elimination of benzotriazolyl group from N-(α-benzotriazol-1-ylalkyl)amides and N-(α-benzotriazol-1-ylalkyl)sulfonamides are readily realized with samariumdiiodide as a reducing agent. The resulting intermediates undergo a dimerization or cross-coupling reaction with carbonylcompounds, thus affording the corresponding dimers or α-hydroxyalkylated sulfonamides in moderate yields.
<i>N</i>-[1-(Benzotriazol-1-yl)alkyl]amides, Versatile Amidoalkylation Reagents. Part 2. Amidoalkylation of Aromatic Compounds
作者:Alan R. Katritzky、Juliusz Pernak、Wei-Qiang Fan
DOI:10.1055/s-1991-26596
日期:——
N-[(1-Benzotriazol-1-yl)alkyl]amides 4 react readily with a variety of active aromatic and heterocyclic compounds under mild conditions to give the amidoalkylation products in good yields.
Dy(OTf)3-mediated selective substitution of N-(α-benzotriazolyl-alkyl)amides with active methylene compounds for synthesis of benzotriazole derivatives
作者:Weixun Li、Yang Ye、Jin Zhang、Renhua Fan
DOI:10.1016/j.tetlet.2009.07.098
日期:2009.9
A Dy(OTf)3-mediated selectivesubstitutionreaction of N-(α-benzotriazolyl-alkyl)amides with activemethylenecompounds is reported. The present procedure provides a facile method for the synthesis of benzotriazole derivatives.
N-(1-benzotriazol-1-ylalkyl)amides, versatile .alpha.-amidoalkylation reagents. 1. .alpha.-Amidoalkylation of CH acids
作者:Alan R. Katritzky、Juliusz Pernak、Wei Qiang Fan、Franciszek Saczewski
DOI:10.1021/jo00014a020
日期:1991.7
N-(1-Benzotriazol-1-ylalkyl)amides 2, easily prepared from an amide and an aldehyde with benzotriazole, react smoothly with CH acids under mild conditions to give the alpha-amidoalkylation products in good yields. Benzotriazole aminals also react with CH acids in the presence of methyl iodide.
Samarium Triiodide–Catalyzed Formation of Mannich‐Type Products by Amidoalkylation of 1,3‐Dicarbonyl Compounds