References
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- Sodium (5 mg.a.) was added at room temperature to a stirred solution of o-tolunitrile (5 mmol.) in dry tetrahydrofuran under a nitrogen atmosphere. The reaction mixture was then put under a reduced pressure of 130 Torr
- “ If the diazotization was carried out with added stronger acid (H2SO4) and less attention to temperature control, the 4-position of the isoquinoline ring apparently underwent substitution ” .
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