Lithium Chloride → HCID 42626105, compound

Participants

Reaction Conditions

Reaction Steps

A solution containing the product from Example 23K (11.0 g, 20.5 mmol) in DMF (90 mL) was treated with LiCl (8 g, 188.7 mmol), tetrakis(triphenylphosphine)palladium(0) (5 g, 4.3 mmol), and 2-tri-n-butylstannylpyridine (22 g, 59.8 mmol), heated at 80° C. for 16 hours, cooled, filtered and concentrated. The residue was partitioned between ethyl acetate and water, and the organic phase was washed with brine and dried over MgSO4, filtered and concentrated. The residue was purified by chromatography on silica gel eluting with a gradient 0-25% ethyl acetate/hexanes to give the title compound (7.6 g, 72% yield).

Provenance & Evidence