Benzoic Acid → HCID 178525738, compound

Participants

Reaction Steps

Diethyl azodicarboxylate (163.0 μL, 0.001035 mol) was added to a mixture of benzyl (5S)-2-(trans-4-hydroxycyclohexyl)-1-oxo-2,7-diazaspiro[4.5]decane-7-carboxylate (200.0 mg, 0.0005175 mol, this compound was prepared by using the procedures of example 472-a, step 1), and triphenylphosphine (271.4 mg, 0.001035 mol) in tetrahydrofuran (3.0 mL, 0.037 mol) at rt. The mixture was stirred at rt for 5 minutes, then benzoic acid (66.36 mg, 0.0005434 mol) was added. After stirring for an additional 2 h, the volatiles in the mixture were removed in-vacuo and the residue was purified by flash chromatography to afford the desired product.

Provenance & Evidence