Tetrahedron Letters p. 3365 - 3366 (1994)
Update date:2022-08-17
Topics:
Costantini, Claudio
Testa, Gennaro
Crescenzi, Orlando
d'Ischia, Marco
The pheomelanin precursors 1a and the related dihydro-1,4-benzothiazines 1b-f undergo ring contraction upon irradiation with pyrex-filtered UV light to give 2-methylbenzothiazoles 2a-f in good yields.
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