Sodium Iodide → HCID 178443937, compound

Participants

Reaction Steps

A solution of diethyl 3-bromo-3(1-trityl-1,2,4-triazol-3-yl)propane phosphonate (1.0 g, prepared as described in Example 29) and sodium iodide (1.30 g) in acetone (15 ml) was allowed to stand for twenty hours at room temperature in the absence of light. It was then filtered through Hyflo Super-Cel, evaporated under reduced pressure and the residue partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over magnesium sulphate and evaporated under reduced pressure. The residue was chromatographed on silica, using dichloromethane-ethanol (49:1) as eluant, to give diethyl 3-iodo-3(1-trityl-1,2,4-triazol-3-yl)propane phosphonate (0.85 g, m.p. 98-100° C.). NMR (CDCl3): δ 1.3(6H,t), 1.7-1.9(2H,m), 2.5-2.6(2H,m), 4.05(4H,m), 5.3(1H,t), 7.1(6H,m), 7.3(9H,m), 7.9(1H,s). M/S: M+ 615.

Provenance & Evidence