Tetrahedron Letters p. 3585 - 3588 (1987)
Update date:2022-08-02
Topics:
Cornwall, Philip
Dell, Colin P.
Knight, David W.
Dianions <(5) and (7)> are obtained by regiospecific lithiations of the parent thiazole- and oxazole-carboxylic acids; when the 2-position is blocked by a phenyl group, 4-(or 5-) methyl groups can be lithiated in thiazole- or oxazole-5(or 4-)carboxylic acids
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