Under Lewis acidic conditions using Hf(OTf)(4), the aminomethylation of an indole derivative with a typical N,O-acetal preferentially produced kinetically favored N-aminomethylated indole derivatives instead of thermodynamically favored 3-aminomethylated indoles.
BURGER, U.;BRINGHEN, A. O.;WIRTHNER, PH. J.;SCHAERER, J. -C., HELV. CHIM. ACTA, 1985, 68, N 8, 2275-2281
作者:BURGER, U.、BRINGHEN, A. O.、WIRTHNER, PH. J.、SCHAERER, J. -C.