F. Bracher et J. Daab, BETA-CARBOLINE ALKALOIDS .8. REGIOSELECTIVE HOMOLYTIC ACETYLATION OF BETA-CARBOLINES, Synthetic communications, 25(10), 1995, pp. 1557-1562
Homolytic acetylation of 3-ethoxycarbonyl-beta-carboline and norharman
e occurs selectively at 1-position. Better yields are obtained by gene
ration of the acetyl radical from acetaldehyde than by oxidative decar
boxylation of pyruvic acid.