Regioselective and stereospecific synthesis of functionalized 3,4-dihydro-2
H-1,4-thiazines by catalyst-free [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines.
Org Chem Front 2022. [DOI:
10.1039/d2qo00612j]
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