N‐diethylarylamide using CIPE‐assisted α‐silyl carbanions (CIPE=complex‐inducedproximityeffect) has been developed using a simple reagent combination of LDA (lithium diisopropylamide) and chlorosilane. A study of the mechanism, and the application of the procedure to an anionic Snieckus–Fries rearrangement for a highly efficient synthesis of the potent phosphatidylinositol 3‐kinase (PI3K) inhibitor LY294002
Disclosed is a new, catalytic, and general methodology for the chemical synthesis of biaryl, heterobiaryl, and polyaryl molecules by the cross-coupling of o-methoxybenzamides with aryl boroneopentylates. The reaction is based on the activation of the unreactive C-OMe bond by the proximate amide directing group using catalytic RuH2(CO)(PPh3)3 conditions. A one-step, base-free coupling process is thereby
Directed <i>ortho</i>
-Metalation of <i>O</i>
-Aryl <i>N</i>
,<i>N</i>
-Dialkylcarbamates: Methodology, Anionic <i>ortho</i>
-Fries Rearrangement, and Lateral Metalation
作者:M. A. Jalil Miah、Mukund P. Sibi、S. Chattopadhyay、Oluwole B. Familoni、Victor Snieckus
DOI:10.1002/ejoc.201701142
日期:2018.1.31
to afford a range of polysubstituted aromatic compounds (Tables 1 and 2, Schemes 2 and 3). Warming solutions of the ortho-lithiated O-carbamates to room temperature without external quench with electrophiles leads to the formation of salicylamide and 1- and 2-hydroxynaphthamide derivatives by an anionic ortho-Fries rearrangements (Scheme 4). The relative stability and reactivity of different N,N-dialkyl
COPPER-CATALYZED FORMATION OF CARBON-HETEROATOM AND CARBON-CARBON BONDS
申请人:MASSACHUSETTS INSTITUTE OF TECHNOLOGY
公开号:EP1390340B1
公开(公告)日:2017-03-01
C−H Oxygenation Reactions Enabled by Dual Catalysis with Electrogenerated Hypervalent Iodine Species and Ruthenium Complexes
作者:Leonardo Massignan、Xuefeng Tan、Tjark H. Meyer、Rositha Kuniyil、Antonis M. Messinis、Lutz Ackermann
DOI:10.1002/anie.201914226
日期:2020.2.17
The catalytic generation of hypervalent iodine(III) reagents by anodic electrooxidation was orchestrated towards an unprecedented electrocatalytic C−H oxygenation of weakly coordinating aromatic amides and ketones. Thus, catalytic quantities of iodoarenes in concert with catalytic amounts of ruthenium(II) complexes set the stage for versatile C−H activations with ample scope and high functional group