Preparation of polyfunctional arylmagnesium reagents bearing a triazene moiety. A new carbazole synthesis.
[reaction: see text] The reaction of iodo- or bromo-substituted aryltriazenes with i-PrMgCl.LiCl generates the corresponding magnesiated derivatives which react with various electrophiles (acid chlorides, 3-iodoenones, allylic halides, aldehydes) affording polyfunctional triazenes. They can be readily converted to the corresponding polyfunctional aryl iodides. This new synthetic strategy was applied to prepare functionalized carbazoles.
Liu
Ching-Yuan
CY
Department Chemie und Biochemie, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, München, Germany.
Knochel
Paul
P