Synthetic Communications p. 1649 - 1655 (1991)
Update date:2022-08-04
Topics:
Daniel
Dhar
Chlorosulfonyl isocyanate (CSI) reacts with 2H-azirines 1a-c at -78°C to form [2+2+2] cycloadducts 3a-c and 4a-c. The tricyclic aziridine derivatives 4a-c undergo CSI extrusion reactions and subsequent oxidation to the corresponding pyrazines 5a-c. Structural identifications of 3a-c and 4a-c are based on ir, nmr and mass spectral data.
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