期刊
SYNTHETIC COMMUNICATIONS
卷 47, 期 9, 页码 878-885出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00397911.2017.1293107
关键词
1, 4-Benzoxazines; catalyst; DMAP; Schiff bases
资金
- National Natural Science Foundation of China [21302001, 21372008]
- Key Program in the Youth Elite Support Plan in Universities of Anhui Province [gxyqZD2016119]
We demonstrate that 1,4-benzoxazines can be efficiently synthesized using 4-dimethylaminopyridine (DMAP) as a catalyst. We found that the DMAP catalyst can successfully promote the incorporation of the activated carbon atoms of a-halo ketones into the Schiff bases. The 1,4-benzoxazines can be synthesized through the formation of C-O and C-C bonds in high yield, using DMAP as the catalyst, a-halo ketones and phenolic Schiff bases as the reactants. Furthermore, a possible mechanism is proposed. This work provides a simple and efficient route to prepare the 1,4-benzoxazines.
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