Novel Methodology for the Efficient Synthesis of 3-Aryloxindoles: [1,2]-Phospha-Brook Rearrangement–Palladium-Catalyzed Cross-Coupling Sequence
作者:Masahiro Terada、Azusa Kondoh、Akira Takei
DOI:10.1055/s-0035-1561859
日期:——
A novelmethodology for the efficient synthesis of 3-aryloxindoles from isatin derivatives was developed. The methodology involves the formation of an oxindole having a phosphate moiety at the C-3 position via the [1,2]-phospha-Brook rearrangement under Bronsted base catalysis followed by palladium-catalyzed cross-coupling with aryl boron reagents. The one-pot synthesis of 3-aryloxindoles from isatin
Et-duphos-nickel-catalyzed asymmetric arylation of benzaldehyde derivatives bearing an ortho-Me2PhSi group with potassium aryltriolborates
作者:Fumie Sakurai、Kazuhiro Kondo、Toyohiko Aoyama
DOI:10.1016/j.tetlet.2009.08.019
日期:2009.11
The Ni-catalyzed asymmetric arylation of benzaldehydes bearing an ortho-masked H group with potassium aryltriolborates has been developed. The keys to success were (i) steric tuning of benzaldehyde derivatives with an ortho-Me2PhSi group, and (ii) the use of potassium aryltriolborates as aryl sources. (C) 2009 Elsevier Ltd. All rights reserved.