Tetrahydrofuran → 7-Chloro-3-ethyl-1-trityl-1,3,4,5-tetrahydropyrazolo[3,4,5-de][1,6]naphthyridine

Participants

Reaction Conditions

Reaction Steps

2-(6-chloro-3-iodo-1-trityl-1H-pyrazolo[4,3-c]pyridin-4-yl)-N-ethylethanamine (160 mg, 0.270 mmol) and RuPhos pre-catalyst (19.6 mg, 0.027 mmol) were charged in a 1 dram vial, evacuated and backfilled with nitrogen and taken in toluene (1.8 mL) before a solution of 2M NaOtBu in THF (0.34 ml, 0.675 mmol) was added. The reaction mixture was heated at 55° C. for 1 hour before it was diluted with EtOAc and washed with water, brine, dried with sodium sulfate and concentrated. Purification of the residue by flash column (0-50% EtOAc-hexanes) gave 7-chloro-3-ethyl-1-trityl-1,3,4,5-tetrahydropyrazolo[3,4,5-de][1,6]naphthyridine. MS ESI calc'd. for C29H25ClN4 [M+H]+ 465. found 465.

Provenance & Evidence