1-[2-(4-Aminopiperidin-1-yl)ethyl]-7-methoxy-1,4-dihydro-2H-3,1-benzoxazin-2-one trifluoro acetate → 1-[2-(4-Aminopiperidin-1-yl)ethyl]-7-chloro-1,8-naphthyridin-2(1H)-one

Participants

Reaction Steps

tert-Butyl{1-[2-(7-chloro-2-oxo-1,8-naphthyridin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate (Intermediate 139, 308 mg, 0.76 mmol) was reacted as described for Intermediate 106. The crude trifluoro acetate of the title compound was used without further purification for the next step (quantitative).

Provenance & Evidence