2904-63-4Relevant articles and documents
Stereospecific 1,4-Metallate Shift Enables Stereoconvergent Synthesis of Ketoximes
Yang, Kai,Zhang, Feng,Fang, Tongchang,Zhang, Guan,Song, Qiuling
, p. 13421 - 13426 (2019/08/20)
Reported herein is a stereospecific 1,4-metallate rearrangement for single-geometry ketoxime synthesis from oxime chlorides and arylboronic acids. This strategy exhibits broad substrate scope with excellent stereoselectivity under mild reaction conditions. In comparison with the conventional approaches, each configuration of unsymmetric diaryl oximes, as well as the thermodynamically less stable Z isomer of aryl alkyl ketoximes can be selectively and exclusively obtained. The reactivities of unsymmetric diaryl oximes and the Z isomer of aryl alkyl oximes, a class of underexplored molecules, enables efficient access to the corresponding isoquinolines, isoquinoline N-oxides, and amides having a single configuration.
Highly regioselective nitrile oxide dipolar cycloadditions with ortho-nitrophenyl alkynes
McIntosh, Melissa L.,Naffziger, Michael R.,Ashburn, Bradley O.,Carter, Rich G.,Zakharov, Lev N.
, p. 9204 - 9213,10 (2012/12/12)
The dipolar cycloadditions of ortho-nitrophenyl alkynes with aryl nitrile oxides has been demonstrated. A range of substituents are tolerated on the alkyne. These reactions proceed with excellent levels of regioselectivity. Subsequent functionalization of the isoxazole scaffold has been demonstrated.
Regioselective synthesis and side-chain metallation and elaboration of 3-aryl-5-alkylisoxazoles
Di Nunno, Leonardo,Scilimati, Antonio,Vitale, Paola
, p. 2659 - 2665 (2007/10/03)
A number of 3-aryl-5-alkylisoxazoles have been synthesized in high yields by reacting arylnitrile oxides with free enolate ions regioselectively obtained by metallation of various alkyl methyl ketones with LDA in THF at -78°C followed by dehydration. Inve