Diisopropylethylamine → 1-[(6-Bromopyridin-2-yl)methyl]-4-methyl-1,4-azaphosphinane 4-oxide

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Reaction Steps

2-Bromo-6-(bromomethyl)pyridine (Example 190, Step 1) (500 mg, 1.99 mmol), 4-methyl-1,4-azaphosphinane 4-oxide hydrochloride (406 mg, 2.39 mmol, prepared according to the method described in WO 2008/010985), and DIEA (522 μL, 2.99 mmol) were combined in DMF (5.0 mL) and stirred at room temperature overnight. The solvent was then evaporated in vacuo and the crude residue was purified by reverse phase HPLC (MeCN/water w/0.025% TFA) to afford the title compound as a colorless foam.

Provenance & Evidence