3,4-Difluorophenol → HCID 66875043, compound

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Reaction Steps

The title compound, m/e=413.6 ([M−H]−), was produced in analogy with example 18, steps 1 to 4. Thus, 3,4-difluorophenol was alkylated in step 1 with 9-bromo-1-nonanol, leading to 9-(3,4-difluoro-phenoxy)-nonan-1-ol, which was oxidized in step 2 to 9-(3,4-difluoro-phenoxy)-nonanoic acid. This was coupled in step 3 with (R)-3-amino-4-dimethylamino-butyric acid benzyl ester dihydrochloride to produce (R)-4-dimethylamino-3-[9-(3,4-difluoro-phenoxy)-nonanoylamino]-butyric acid benzyl ester, which was hydrogenated in step 4.

Provenance & Evidence