tailieunhanh - Synthesis of some derivatives containing both benzothiazole and benzoxazin-3-one

Reaction of ethyl monochloro acetate and o-aminophenol derivatives gave two new benzo[b][1,4]oxazin-3(4H)-one containing benzo[d]thiazole ring with 2 methods in high yield. Structures of two benzo[b][1,4]oxazin-3(4H)-one based derivatives were elucidated with IR, 1D NMR, 2D NMR and MS spectra. |

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