1,1'-(Hexane-1,6-diyl)bis{2-[(3,4-dimethoxyphenyl)methyl]-1H-pyrrole} → HCID 19884871, compound

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Reaction Steps

A solution of 1,6-bis[2-(3,4-dimethoxybenzyl)pyrrol-1-yl]hexane (2.5 g) in glacial acetic acid (30 mL) containing suspended 5% rhodium on alumina catalyst (1.87 g) was reduced at room temperature and an initial hydrogen pressure of 45 p.s.i.g. (3 hour reaction, followed by TLC). The mixture was filtered through Celite. The filtrate was dried at reduced pressure, and the residue dissolved in dichloromethane, washed with ammonium hydroxide solution and dried over sodium sulfate. The solvent was removed in vacuo, and the residue subjected to column chromatographic purification on silica gel (100 g) using dichloromethane, to elute 1,6-bis[2-(3,4-dimethoxybenzyl)pyrrolidin-1-yl]hexane, 2.5 g (92% yield) as an oil.

Provenance & Evidence