4-Toluenesulfonyl chloride → 1,4-Dioxaspiro[4.5]decan-8-ol, 8-(4-methylbenzenesulfonate)

Participants

Reaction Conditions

Reaction Steps

4-Methyl-benzenesulfonyl chloride (5.51 g; 29 mmol; 1.0 eq.) was added portionwise to a solution of 1,4-Dioxa-spiro[4.5]decan-8-ol (4.44 g; 28 mmol; 1.0 eq.) in anhydrous Pyridine (13.5 mL) maintained at 5° C. with an ice bath. The reaction mixture was then allowed to warm to RT and stirred O/N. It was then quenched by addition of water and diluted with EtOAc. Organic phase was washed with a 1N HCl solution, saturated NaHCO3 solution and brine. It was dried over magnesium sulfate, filtered and concentrated under reduced pressure to give 6.9 g of a pale yellow oil. Purification by flash chromatography on silica (heptane/EtOAc 60:40) afforded the title compound as a white powder (4.7 g, 52%). HPLC (Condition A): Rt 4.04 min (purity 100%). MS (ESI+): 330.3

Provenance & Evidence