Section 2.4.6 Spectacular results were reported by Mukaiyama and coworkers167,168 in the field of chiral Lewis acids. Reaction of thiol ester derived silylketene acetals with aldehydes promoted by the combined use of a chiral diamine coordinated with tin(II) triflate and tributyltin fluoride gave...
Common Lewis acids and Lewis acidic ionic liquid catalysts were applied in the synthesis of 5-tert-butyl-1,2,3-trimethylbenzene from 1,2,3-trimethylbenzene and 2-chloro-2-methylpropane, where Cl–AlCl3 demonstrated the most promising catalytic potential. The effects of reaction time, temperature...
Polymerization of t-Butyl Vinyl Ether Mediated by an Aluminum Lewis Acid-TrF System and Its Complex Structure-Tacticity Correlation A variety of aluminum (aryloxide)s were used with triphenylmethyl fluoride (TrF) initiator for the isoselective cationic polymerization of t-butyl vinyl ether. This contr...
A typical Ziegler–Natta catalyst system comprises four essential components: TiCl4acting as a catalyst precursor, MgCl2as support, electron donors (Lewis bases), and alkyl aluminum as a catalyst activator. The primary function of the Ziegler–Natta catalyst lies in activating and controlling the ole...