Chloroform → HCID 9834706, compound

Participants

Reaction Steps

A solution of 4-phenoxyphenol (2.14 g, 11.5 mmol) in toluene (7 ml) was poured into an aqueous solution (3 ml) of sodium hydroxide (0.92 g, 23.0 mmol), and (S)-(-)propylene oxide (1.0 g, 17.24 mmol; a reagent manufactured by Aldrich; [α]D20 =-7.2° (CHCl3, c=1)) was added thereto while stirring. To the resultant mixture, tetra-n-butyl-ammonium bromide (185 mg) was added, and the mixture was stirred at room temperature for 12 hours, followed by addition of (S)-(-)-propylene oxide (1 g). After stirring at room temperature for 6 hours, the reaction mixture was vigorously stirred with addition of water (20 ml) and toluene (20 ml). The toluene layer was separated and washed with a 20 % aqueous sodium hydroxide solution and an aqueous sodium chloride solution in order and dried over magnesium sulfate. Removal of the solvent gave crude (S)-(+)-1-methyl-2-(4-phenoxyphenoxy)ethanol (2.35 g), which was further purified by silica gel column chromatography to give (S)-(+)-1-methyl-2-(4-phenoxyphenoxy)ethanol (1.97 g). [α]D23 =+14.0° (CHCl3, c=1). ee.: 72.9%.

Provenance & Evidence