Selective Insertion of Alkynes into C-C σ Bonds of Indolin-2-ones: Transition-Metal-Free Ring Expansion Reactions to Seven-Membered-Ring Benzolactams or Chromone Derivatives
An unprecedented ring expansion reaction of indolin-2-ones with alkynyl ketones under transition-metal-free conditions has been developed. Base-promoted selective cleavage of a C-C σ bond of the amide is the key in this process, which provides a straightf
The palladium catalyzed asymmetric addition of oxindoles and allenes: An atom-economical versatile method for the construction of chiral indole alkaloids
The Pd-catalyzed asymmetric allylic alkylation (AAA) is one of the most useful and versatile methods for asymmetric synthesis known in organometallic chemistry. Development of this reaction over the past 30 years has typically relied on the use of an ally
Trost, Barry M.,Xie, Jia,Sieber, Joshua D.
p. 20611 - 20622
(2012/02/01)
Catalytic enantioselective stereoablative alkylation of 3-halooxindoles: Facile access to oxindoles with c3 all-carbon quaternary stereocenters
From 2 to 1! Racemic tertiary halooxindoles proceed to enantioenriched oxindoles bearing all-carbon quaternary stereocenters as a result of a catalytic enantioselective stereoablative process (see scheme). The application of this procedure allows for the
Ma, Sandy,Han, Xiaoqing,Krishnan, Shyam,Virgil, Scott C.,Stoltz, Brian M.
supporting information; experimental part
p. 8037 - 8041
(2010/01/16)
Thermal and acid-catalyzed Hofmann-Martius rearrangement of 3-N-aryl-2-oxindoles into 3-(arylamino)-2-oxindoles
The Hofmann-Martius rearrangement of 3-N-aryl-2-oxindoles into 3-(arylamino)-2-oxindoles under thermal and acid-catalyzed conditions is described.
Magnus, Philip,Turnbull, Rachel
p. 3497 - 3499
(2007/10/03)
A mild thermal and acid-catalyzed rearrangement of O-aryl ethers into ortho-hydroxy arenes
(Chemical Equation Presented) An unusual rearrangement of an O-aryl ether to an ortho-hydroxyaryl system was discovered during our studies on the synthesis of diazonamide A. We discuss the exploration of this rearrangement under mild thermal and both Bron
Goldberg, Frederick W.,Magnus, Philip,Turnbull, Rachel
p. 4531 - 4534
(2007/10/03)
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