Toluene → HCID 178441959, compound

Participants

Reaction Steps

A mixture of 3-butyl-4-[[4-[1-cyano-1-phenyl-methoxy]phenyl]methyl]-5-(4-nitrobenzylthio)-4H-1,2,4-triazole (from Example 3, Step B), trimethyltin azide (3.5 equivalents), and toluene is stirred at reflux for about 2 days. The mixture is then cooled and concentrated in vacuo. The residue is partitioned between 0.5N HCl and ethyl acetate. The ethyl acetate phase is dried (MgSO4), filtered, and concentrated. The residue is taken up in methanol and stirred with silica gel (4-5 g per mmol of cyano starting material) for about 1 hour. The mixture is then evaporated in vacuo to give a dry powder, which is layered on top of a column of silica gel packed in CH2Cl2. Elution of the column with a gradient of methanol in CH2Cl2 affords the title compound.

Provenance & Evidence