Water → HCID 58994384, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 1-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-(4-nitro-benzyl)-piperazine (as prepared in the previous step, 279 mg, 0.735 mmol) in MeOH (4 mL) and water (4 mL) was treated with solid NH4Cl (393 mg, 7.35 mmol) and Zn powder (240 mg, 3.67 mmol). The mixture was stirred at 50° C. for 2 h and at RT for 16 h. The mixture was partitioned between EtOAc and water. The layers were separated, and the aqueous layer was extracted with EtOAc. The combined organic layers were dried over MgSO4 and concentrated in vacuo. Purification of the residue on a 20-g Isolute SPE column on a FlashMaster system with EtOAc afforded the title compound (204 mg, 79%) as a yellow solid. Mass spectrum (ESI, m/z): Calcd. for C19H35N3OSi, 350.3 (M+H). found 350.2.

Provenance & Evidence