2-[2-[2-(2-trityloxyethoxy)ethoxy]ethoxy]ethanol

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To tetraethylene glycol (213.65 g, 1.1 mol) and triethylamine (20.24 g, 27.8 ml, 200 mmol) in dry dichloromethane (1500 ml) was added dropwise triphenylmethyl chloride (27.88 g, 100 mmol) in dry dichloromethane (500 ml). This solution was left to stir under argon at room temperature for 24 hours. After 24 hours, the reaction was concentrated in vacuo to give a mixture of product and starting material as a yellow oil. This oil was then re-dissolved in dichloromethane (1000 ml), partitioned with sat. aq. NaHCO3 (500 ml), water (3×400 ml) and finally sat. aq. NaCl (500 ml). The organic layer was separated, dried over anhydrous sodium sulphate and concentrated in vacuo to give the title compound as a yellow oil (42.2 g, 95%) which was used without further purification. This solution was left After 24 hours the reaction was concentrated in vacuo to give a mixture of product partitioned with sat. aq. NaHCO3 (500 ml), water (3×400 ml) and finally sat. aq. NaCl (500 ml) The organic layer was separated dried over anhydrous sodium sulphate concentrated in vacuo