Thionyl Chloride → Benzotriazol-1-yl-(2,2,6,6-tetramethyl-tetrahydro-pyran-4-yl)-methanone

Participants

Reaction Steps

To a mixture of 2,2,6,6-tetramethyl-tetrahydro-pyran-4-carboxylic acid (1.4 g, 6.8 mmol) and benzotriazole (2.4 g, 20.3 mmol) in 34 mL of DCM was added thionyl chloride (0.55 mL, 7.4 mmol) dropwise and the mixture was allowed to stir for 8 hrs at RT. The mixture was filtered to remove the ppt and the filtrate washed with saturated NaHCO3 (2×40 mL) and then brine (50 mL). The organic layer was dried over Na2SO4 and concentrated to give 1.9 g (97%) of a white ppt.

Provenance & Evidence