Heptane → HCID 90203887, compound

Participants

Reaction Conditions

Reaction Steps

A 2.0M solution of lithium diisopropylamide in THF (492 μl, 984 μmol) was added dropwise to a solution of 4-methylthiazole (97.5 mg, 984 μmol) in dry THF (0.3 ml) cooled to −78° C. and once the addition was complete the reaction was stirred for 30 minutes at −78° C. followed by addition of dry toluene (0.6 ml). To a solution of 2-methyl-N-(2H-pyran-4(3H,5H,6H)-ylidene)propane-2-sulfinamide (CAN 861857-62-7, 100 mg, 492 μmol) in dry toluene (1 mL) was added a 2.0M solution of trimethylaluminum in heptane (271 μl, 541 μmol). The former solution was then added to the reaction mixture cooled at −78° C. The reaction was allowed to warm up to room temperature overnight. The reaction was quenched by the addition of a saturated aqueous solution of ammonium chloride and was then diluted with ethyl acetate. The bi-phasic mixture was poured into a separatory funnel and extracted. The organic phase was collected, dried over sodium sulfate and evaporated down to dryness. The crude material was purified by flash chromatography on silica eluting with a dichloromethane/methanol gradient to yield the title compound (102 mg, 69%). MS (ESI, m/z): 303.5 (M+H+).

Provenance & Evidence