| Abstrakt: |
Further exploration of the trifunctional character of previously introduced alkyl 4-chloro-2-diazo-3-oxobutanoates in reactions with N -protected substituted o -aminophenols followed by deprotection provided a convenient entry into [1,2,3]triazolo[5,1- c ][1,4]benzoxazines, which are of high medicinal importance, as documented in the literature. The same approach applied to N -protected substituted o -(aminomethyl)phenols afforded [1,2,3]triazolo[5,1- c ][1,4]benzoxazepines, which are practically unexplored compounds from a medicinal chemistry perspective. The syntheses start with SN 2-type alkylation of the phenol. Removal of the protecting group triggers imine formation followed by Wolff 1,2,3-triazole synthesis. [ABSTRACT FROM AUTHOR] |
