Diisopropylethylamine → 2S9KS24Syb

Participants

Reaction Conditions

Reaction Steps

(2-Chloro-5-phenyl-thieno[2,3-d]pyrimidin-4-yl)-pyridin-2-ylmethyl-amine (44 mg, 0.124 mmol), Piperidine-3-carboxylic acid(2-hydroxyethyl)amide (Fluorochem, 32 mg, 0.188 mmol, 1.5 eq) and N,N-diisopropylethylamine (Aldrich, 0.188 mmol) were dissolved in N-Methyl Pyrrolidinone (1.5 ml) in a Biotage microwave tube and heated to 200° C. and maintained at this temperature for 30 min. On cooling, the solvents were removed in vacuo. The residue was triturated with DCM (2×10 ml) and the extracts combined, concentrated and purified by prep TLC (eluent 10% MeOH/DCM) to give the product as a yellow oil, which slowly solidified on standing to a waxy solid. The waxy solid may be converted to a free-flowing powder by stirring in diethyl ether for 1-2 h (0.5 g in 10 ml). Yield=18.3 mg (30%)

Provenance & Evidence