Palladium-Catalyzed Reactions of N-Allylbenzotriazoles with Amines: Intramolecular Allylamination Routes to 2-Vinylpyrrolidines and 2-Vinylpiperidines
摘要:
Reactions of allylbenzotriazole (4a-d) with 1-bromo-3-chloropropane, 1-bromo-2-methyl-3-chloropropane, epibromohydrin (8), and 1-bromo-4-chlorobutane afforded the corresponding alpha-substituted allylbenzotriazoles (5a-d, 9, and 16a,b), which with primary amines in one-pot sequences produce 2-vinylpyrrolidines (7a-i), 2-ethylpyrrole (13), and 2-vinylpiperidines (18a-c) in good yields under mild conditions.
Palladium-Catalyzed Reactions of N-Allylbenzotriazoles with Amines: Intramolecular Allylamination Routes to 2-Vinylpyrrolidines and 2-Vinylpiperidines
摘要:
Reactions of allylbenzotriazole (4a-d) with 1-bromo-3-chloropropane, 1-bromo-2-methyl-3-chloropropane, epibromohydrin (8), and 1-bromo-4-chlorobutane afforded the corresponding alpha-substituted allylbenzotriazoles (5a-d, 9, and 16a,b), which with primary amines in one-pot sequences produce 2-vinylpyrrolidines (7a-i), 2-ethylpyrrole (13), and 2-vinylpiperidines (18a-c) in good yields under mild conditions.
Palladium-Catalyzed Reactions of <i>N-</i>Allylbenzotriazoles with Amines: Intramolecular Allylamination Routes to 2-Vinylpyrrolidines and 2-Vinylpiperidines
作者:Alan R. Katritzky、Jiangchao Yao、Baozhen Yang
DOI:10.1021/jo990181r
日期:1999.8.1
Reactions of allylbenzotriazole (4a-d) with 1-bromo-3-chloropropane, 1-bromo-2-methyl-3-chloropropane, epibromohydrin (8), and 1-bromo-4-chlorobutane afforded the corresponding alpha-substituted allylbenzotriazoles (5a-d, 9, and 16a,b), which with primary amines in one-pot sequences produce 2-vinylpyrrolidines (7a-i), 2-ethylpyrrole (13), and 2-vinylpiperidines (18a-c) in good yields under mild conditions.