Synthesis of fluorinated spiro-1,3-oxazines and thiazines via Selectfluor-mediated intramolecular cyclization
作者:Chinu Gogoi、Ujwal Pratim Saikia、Priyam Borah、Trishna Saikia、Anamika Bora、Gaurav K. Rastogi、Pallab Pahari
DOI:10.1039/d4ob00895b
日期:——
3-thiazine derivatives is described. N-(2-(Cyclohex-1-en-1-yl)ethyl)benzamide and benzothioamide are used as the substrates, and the cationic fluorinating agent Selectfluor works as the fluoride source. The reaction yields a single diastereomer. The scope of this regioselective fluorination reaction is established by preparing thirty different spirooxazine and spirothiazine derivatives.