Sr. Waldman et al., ONE-POT CLAISEN REARRANGEMENT O-METHYLATION/ALKENE ISOMERIZATION IN THE SYNTHESIS OF ORTHO-METHOXYLATED PHENYLISOPROPYLAMINES/, Tetrahedron letters, 37(44), 1996, pp. 7889-7892
An improved synthesis of a potent serotonin agonist la and its novel d
erivative Ib is described, making use of a Claisen rearrangement whose
unstable phenolic product is methylated and isomerized in sire. This
method may be of general use in the synthesis of o-methoxylated phenet
hylamine derivatives. The synthesis also includes an unusual, one pot
demethylation/primary alcohol bromination with boron tribromide. Copyr
ight (C) 1996 Elsevier Science Ltd