Abstract

The three-component reactions of 3,4-dihydroisoquinolines, isocyanides, and benzyl chloroformate furnished 2-benzyloxycarbonyl-1,2,3,4-tetrahydroisoquinoline-1-carboxamides in moderate to good yields. Hydrogenolysis or selective hydrolysis of the benzyloxycarbonyl group provided 1,2,3,4-tetrahydroisoquinoline-1-carboxamides, further hydrolysis of which resulted in the corresponding 1,2,3,4-tetrahydroisoquinoline-1-carboxylic acids.

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