T. Jeschke et al., A NOVEL-APPROACH TO BZ-SUBSTITUTED TRYPTOPHANS VIA PD-CATALYZED COUPLING ANNULATION, Tetrahedron letters, 34(40), 1993, pp. 6471-6474
The Pd-catalysed preparation of bz-substituted tryptophans and their d
erivatives, starting from 2-iodoanilines and gamma,delta-acetylenic am
ino acid derivatives, is reported.