Diethyl Malonate → 1,3-Diethyl 2-(3-chloro-4-cyano-2-methylphenyl)propanedioate

Participants

Reaction Conditions

Reaction Steps

To a pressure reaction flask containing diethyl malonate (4.1 mL, 27 mmol) in 50 mL of anhydrous dioxane was added NaH (1.1 g, 27.5 mmol, ˜60% in mineral oil) in several portions at RT, and stirred for 30 min. Compound 1E (2.5 g, 9 mmol) and CuI (5.1 g, 26.8 mmol) were added, sealed and heated at 100° C. for 3 days. The reaction was cooled to RT and filtered through a pad of celite. The celite pad was washed with EtOAc. The organics were washed twice with water, dried over Na2SO4, filtered and concentrated. Purification by flash chromatography (silica gel, 110 g ISCO, 10% EtOAc in hexane) gave the title compound (2.3 g).

Provenance & Evidence