
Tetrahedron Letters p. 6095 - 6096 (1990)
Update date:2022-08-29
Topics:
Crescenzi
Costantini
Prota
Oxidation of α-methyldopa methyl ester leads to the aminochrome 4, which, at neutral pH, spontaneously rearranges to give a relatively stable quinone-methide identified as 5. This provides the first evidence for the postulated intermediacy of quinone-methides in the conversion of aminochromes to 5,6-dihydroxyindoles.
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(1968)