Tetrahedron p. 2571 - 2574 (1986)
Update date:2022-08-02
Topics:
Katritzky, Alan R.
Akutagawa, Kunihiko
Tetrahydroisoquinoline was converted into several 1-substituted derivatives by using carbon dioxide both for N-protection and to give an intermediate carbanion stabilizing group. t-Butyllithium was used as a lithating agent at the alpha-carbon atom of the secondary amino group.The resulting 1-substituted 1,2,3,4-tetrahydroisoquinoline-2-carboxylic acids underwent smooth acid-catalysed decarboxylation under mild conditions.
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