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. 2020 Mar 11;25(6):1265. doi: 10.3390/molecules25061265

Scheme 2.

Scheme 2

(a) C(sp2)-H activation and intramolecular cross-dehydrogenative coupling (CDC) reaction for the preparation of acridones. (b) This work on the C(sp2)-H functionalization of the N-aryl-1,5-benzoxazepine 4; i: 1,3-dimethylbarbituric acid, MgSO4, CHCl3.