Rhodium-catalyzed reaction of aryl- and alkenylboronic acids with 2,4-dienoate esters: conjugate addition and Heck reaction products.
[chemical reaction: see text]. We report herein the first examples of the addition of aryl- and alkenylboronic acids catalyzed by RhI complexes to 2,4-dienoate esters. Three different types of products have been obtained depending on the substitution pattern of the starting ester and the organoboronic acid: 1,6-conjugate addition products, 1,4-conjugate addition products, and Heck reaction products.
de la Herrán
Gabriela
G
Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040-Madrid, Spain.
Murcia
Carmen
C
Csákÿ
Aurelio G
AG