4-Methoxybenzyl alcohol → HCID 67138887, compound

Participants

Reaction Steps

The title compound of Example 45, 5-(4-iodo-phenyl)-1,1-dioxo-1,2,5-thiadiazolidin-3-one (355.9 mg, 1.05 mmol) is dissolved in THF (20 mL) in a 40 mL capacity septum capped vial, and stirred under argon balloon. Triphenylphosphine (552 mg, 2.11 mmol) is added as a solid and stirred until dissolved, then 4-methyoxybenzyl alcohol (0.156 mL, 1.26 mmol) is added by syringe. The stirred reaction is cooled in an ice bath, and disopropyl azodicarboxylate (0.415 mL, 2.11 mmol) is added slow dropwise by syringe. After two h, the reaction is concentrated in vacuo and the residue is taken up in CH2Cl2. Chromatography on a 35 g silica gel RediSep column (Isco, Inc.) with a 30 mL/min gradient elution of 10:90 (EtOAc:hexane) to 30:70 over 15 min gives 5-(4-iodo-phenyl)-2-(4-methoxy-benzyl)-1,1-dioxo-1,2,5-thiadiazolidin-3-one as a white solid. 1H-NMR (300 MHz, CDCl3) 3.80 (s, 3H), 4.37 (s, 2H), 4.79 (s, 2H), 6.89 (d, J=7.5, 2H, aryl), 7.03 (d, J=7.5, 2H), 7.41 (d, J=7.5, 2H), 7.73 (d, J=7.5, 2H).

Provenance & Evidence