The N-9, C-1 dianion of tetrahydro-β-carbolines. Regioselective alkylation leading to indole alkaloid systems
作者:A.I. Meyers、Mallory F. Loewe
DOI:10.1016/s0040-4039(01)81251-x
日期:1984.1
By treatment of β-carboline formamidine (1) with potassium hydride followed by an alkyl lithium reagent, both the pyrrole proton (N-9) and the proton at C-1 are removed. The resulting dianion (3) alkylates cleanly at C-1 and ultimately at N-9 or N-2.