Benzylic Imidazolidinium, 3,4,5,6‐Tetrahydropyrimidinium and Benzimidazolium Salts: Applications in Ruthenium‐Catalyzed Allylic Substitution Reactions
Makaleler > Tam Makale · 2008
Yazarlar: Sedat Yasar, Ismail Özdemir, Bekir Cetinkaya, Jean‐Luc Renaud, Christian Bruneau
European Journal of Organic Chemistry, Uluslararası, Wos, 2008, cilt 2008, ss 2142-2149
Özet
Abstract Imidazolidinium, tetrahydropyrimidinium and benzimidazolium salts were prepared. Upon reaction with tBuOK, they generate carbene ligands, which were associated in situ to [RuCp*(MeCN)3]PF6 to produce ruthenium catalysts that are active for the substitution of allylic substrates by dimethyl malonate as a carbonucleophile and phenol. The influences of the N‐heterocyclic structures, as well as that of the benzylic N‐substituents, on the reactivity and regioselectivity were examined.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)