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A series of alkylated isoquinoline Reissert compounds (2-acyl-1-alkyl-1,2-dihydroisoquinoline-1-nitriles) with either 3-H (3) or 3-CH 3 (4) substituents was examined by 1 H, 13 C, and 19 F NMR spectroscopies and X-ray crystallography. In all cases the trans-amide conformation, with reference to the carbonyl oxygen and the 3-position of the isoquinoline ring, exists...
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