Palladium on activated carbon - A recyclable catalyst for Suzuki-Miyaura cross-coupling of aryl chlorides in water
Aryl chlorides are efficiently coupled with aryl boronic acids using ligandless Pd/C in water. The catalyst is easily recovered via filtration and reused up to four times with an overall yield of 73%. In addition the catalytic activity and selectivity of a variety of homogeneous and heterogeneous palladium sources have been compared. Georg Thieme Verlag Stuttgart.
Lysen, Morten,Koehler, Klaus
p. 692 - 698
(2007/10/03)
F-NMR-spectroscopy for the identification of photo products generated from aromatic iodo compounds - IV
The investigation demonstrates the analytical power of F-NMR spectroscopy for the identification of isomeric substituted fluorobiphenyls.The biphenyls are formed by u.v. irradiation of iodobenzenes in aromatic solvents.A special procedure for the identification is outlined and tendencies of the results-chemical shifts and relative rates for the production of isomers-are discussed in consideration of electronic and steric substituent effects.