1,8-Diazabicyclo(5.4.0)undec-7-ene → HCID 86632620, compound

Participants

Reaction Steps

To a solution of 4-(1H-pyrazol-4-yl)-7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]-pyrimidine (355 mg, 1.12 mmol) and tert-butyl (1-[(E)-2-cyanovinyl]cyclopentylmethyl)carbamate and tert-butyl (1-[(Z)-2-cyanovinyl]cyclopentylmethyl)carbamate as a mixture of isomers (329 mg, 1.31 mmol) in ACN (10 mL) was added DBU (0.168 mL, 1.12 mmol). The resulting mixture was stirred at ambient temperature for 3 hours followed by heating to 60° C. for 2.5 hours. The ACN was removed in vacuo and the resulting residue was purified by flash column chromatography (eluting with 0-55% ethyl acetate in hexanes) to afford the product (350 mg, 55%).

Provenance & Evidence