Tetrafluoro-m-phenylenediamine dihydrochloride → HCID 44522644, compound

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The title compound was prepared from (+)- 7 -methoxy- 2 -methyl- 4 -phenyl- 1,2,3,4 -terahydro isoquinoline via (+)- 7 -hydroxy- 2 -methyl- 4 -phenyl- 1,2,3,4 -tetrahydro isoquinoline which was characterised as its hydrochloride salt m.p. 222°-3° C. (methanol-ether) [α]D25 + 24.1° (water) by the method of Example 1. The title compound was characterised as its dihydrochloride salt m.p. 160°-4° (hydroscopic) (ethanol ethyl acetate), [α]D5 + 13° (water). -tetrahydro

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