Cationic Palladium(II) Catalysis: C−H Activation/Suzuki−Miyaura Couplings at Room Temperature
作者:Takashi Nishikata、Alexander R. Abela、Shenlin Huang、Bruce H. Lipshutz
DOI:10.1021/ja910973a
日期:2010.4.14
Cationic palladium(II) catalyst realized facile C-Hactivation of aryl urea with arylboronic acids at roomtemperature. This reaction is extremely mild to carry out aromatic C-Hactivations through electrophilic substitution.
Cationic Pd(II)-catalyzed C–H activation/cross-coupling reactions at room temperature: synthetic and mechanistic studies
作者:Takashi Nishikata、Alexander R Abela、Shenlin Huang、Bruce H Lipshutz
DOI:10.3762/bjoc.12.99
日期:——
Cationic palladium(II) complexes have been found to be highly reactive towards aromatic C-H activation of arylureas at room temperature. A commercially available catalyst [Pd(MeCN)4](BF4)2 or a nitrile-free cationic palladium(II) complex generated in situ from the reaction of Pd(OAc)2 and HBF4, effectively catalyzes C-H activation/cross-coupling reactions between aryl iodides, arylboronic acids and
The degradationproducts of diuron (photoproducts and metabolites), already described in the literature, were synthesized in order to carry out further investigations. Their ecotoxicity was determined using the standardized Microtox test, and most of the derivatives presented a nontarget toxicity higher than that of diuron. Therefore, the biotransformation of these compounds was tested with four fungal