A novel Friedel–Crafts alkylation of naphthols without Lewis acid
作者:Yijun Zhu、Kuaile Lin、Deyong Ye、Weicheng Zhou
DOI:10.1016/j.tetlet.2015.07.024
日期:2015.8
A novel Friedel–Crafts alkylation of α- or β-naphthols with a variety of β-haloketones is described. The reaction was environmentally-friendly performed under mild conditions without any Lewis acid and in good to excellent yields.
Nucleophilic Vinylic Substitution in Perfluoroacylchromenes. Diastereoselective Synthesis of Push–Pull Enamino Ketones
作者:V. A. Osyanin、K. S. Korzhenko、D. A. Rashchepkina、D. V. Osipov、Yu. N. Klimochkin
DOI:10.1134/s1070428021070046
日期:2021.7
Abstract The reactions of 2-perfluoroacyl-1H-benzo[f]chromenes and 6,7-dimethyl-3-trifluoroacetyl-4H-chromene with primary aliphatic amines and ammonia afforded a series of enamino ketones containing a (2-hydroxynaphthalen-1-yl)methyl or 2-hydroxybenzyl substituent in the α-position with respect to the carbonyl group. These reactions involved opening of the pyran ring, which followed aza-Michael addition