Triphenylphosphine → HCID 178487793, compound

Participants

Reaction Steps

Diisopropylazodicarboxylate (0.76 g, 3.80 mmol, 1.7 eq) is added at room temperature to a stirred solution of {trans-4-[2-hydroxy-1-(3-hydroxy-6-methoxy-quinolin-4-ylmethyl)-ethyl]-cyclohexyl}-carbamic acid tert-butyl ester (1.08 g, 2.26 mmol, 1.0 eq) and triphenylphosphine (1.90 g, 7.53 mmol, 3.33 eq) in tetrahydrofuran (120 mL). After 1 hour stirring at room temperature, solvent is evaporated to give a crude product that is purified by preparative HPLC to afford [trans-4-(6-methoxy-3,4-dihydro-2H-1-oxa-9-aza-phenanthren-3-yl)-cyclohexyl]-carbamic acid tert-butyl ester as a white lyophilizated powder (670 mg, 71% yield).

Provenance & Evidence