New synthetic routes to furans and dihydrofurans from 1-propargylbenzotriazole
摘要:
Base-assisted cyclizations of 1-[3-[hydroxy(substituted methyl)]propargyl]benzotriazoles, derived from lithiated 1-propargylbenzotriazole (1) and aromatic aldehydes or ketones, gave 2-arylfurans 5 or 1-(5,5-diaryl-2,5-dihydrofuran-2-yl)benzotriazoles 7, respectively, in high yields. Compounds 7 with Grignard reagents yielded trisubstituted 2,5-dihydrofurans 9.
Katritzky Alan R., Li Jianqing, Gordeev Mikhail F., J. Org. Chem., 58 (1993) N 11, S 3038-3041
作者:Katritzky Alan R., Li Jianqing, Gordeev Mikhail F.
DOI:——
日期:——
Katritzky, Alan R.; Li, Jianqing; Malhotra, Nageshwar, Liebigs Annalen der Chemie, 1992, # 8, p. 843 - 854
作者:Katritzky, Alan R.、Li, Jianqing、Malhotra, Nageshwar
DOI:——
日期:——
New synthetic routes to furans and dihydrofurans from 1-propargylbenzotriazole
作者:Alan R. Katritzky、Jianqing Li、Mikhail F. Gordeev
DOI:10.1021/jo00063a022
日期:1993.5
Base-assisted cyclizations of 1-[3-[hydroxy(substituted methyl)]propargyl]benzotriazoles, derived from lithiated 1-propargylbenzotriazole (1) and aromatic aldehydes or ketones, gave 2-arylfurans 5 or 1-(5,5-diaryl-2,5-dihydrofuran-2-yl)benzotriazoles 7, respectively, in high yields. Compounds 7 with Grignard reagents yielded trisubstituted 2,5-dihydrofurans 9.