TY - JOUR
T1 - Gold(I)-catalyzed intramolecular cyclopropanation of dienynes
AU - Nieto-Oberhuber, Cristina
AU - López, Salomé
AU - Munoz-Herranz, Maria
AU - Jiménez-Núñez, Eloísa
AU - Buñuel, Elena
AU - Cárdenas, Diego J.
AU - Echavarren, Antonio M.
PY - 2006
Y1 - 2006
N2 - Gold(I) complexes are the most active catalysts for the biscyclopropanation of dienynes to form tetracyclic compounds. PtII and ZnII are also able to promote the biscyclopropanation, although less efficiently. The configurations obtained in all cases with the use of gold(I) catalysts can be explained by the pathway proceeding through anti cyclopropyl gold carbenes. Similar intermediates are most probably involved in reactions catalyzed by RuII and PtII. Two different cyclopropanation pathways have been found; they depend on the structures of the cyclopropyl gold carbenes (anti or syn) and the relative arrangements of the metal carbenes and the alkenes.
AB - Gold(I) complexes are the most active catalysts for the biscyclopropanation of dienynes to form tetracyclic compounds. PtII and ZnII are also able to promote the biscyclopropanation, although less efficiently. The configurations obtained in all cases with the use of gold(I) catalysts can be explained by the pathway proceeding through anti cyclopropyl gold carbenes. Similar intermediates are most probably involved in reactions catalyzed by RuII and PtII. Two different cyclopropanation pathways have been found; they depend on the structures of the cyclopropyl gold carbenes (anti or syn) and the relative arrangements of the metal carbenes and the alkenes.
U2 - 10.1002/chem.200501089
DO - 10.1002/chem.200501089
M3 - Article
SN - 0947-6539
VL - 12
SP - 1694
EP - 1702
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 6
ER -