Palladium-catalysed regio- and stereoselective arylative substitution of γ,δ-epoxy-α,β-unsaturated esters and amides by sodium tetraaryl borates
作者:Yasemin Bilgi、Melih Kuş、Levent Artok
DOI:10.1039/d0ob01226b
日期:——
Palladium-catalysed reactions of γ,δ-epoxy-α,β-unsaturated esters and amides with NaBAr4 reagents proceeded regio- and stereoselectively, producing allylic homoallyl alcohols with aryl-substituents in the allylic position for a wide range of substrates. AsPh3 was found to be a competent ligand for the arylation reaction, whereas phosphine ligand/Lewis acidic organoboron combinations favoured the substitution
Double 1,4-rhodium migration cascade in rhodium-catalysed arylative ring-opening/spirocyclisation of (3-arylcyclobutylidene)acetates
作者:Takanori Matsuda、Yuya Suda、Akira Takahashi
DOI:10.1039/c2cc18098g
日期:——
1,4-Rhodium migration occurs twice during the course of the rhodium-catalysed arylative ring-opening/spirocyclisation reaction of (3-arylcyclobutylidene)acetates with sodium tetraarylborates to afford ketones possessing a 1,1′-spirobiindane skeleton.
Rhodium-catalyzed arylation of acylsilanes with sodium tetraarylborates
作者:Takanori Matsuda、Kohei Mizuno、Shoichi Watanuki
DOI:10.1016/j.jorganchem.2014.05.005
日期:2014.8
Rhodium(I)-catalyzed arylation of benzoylsilanes with sodium tetraarylborates affords alpha-silyl benzhydrols, benzhydryl silyl ethers, benzhydrols, and diaryl ketones selectively depending on the catalyst, solvent, and temperature. (C) 2014 Elsevier B.V. All rights reserved.
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