15030-76-9Relevant articles and documents
NOVEL CHIRAL DIHYDROBENZOAZAPHOSPHOLE LIGANDS AND SYNTHESIS THEREOF
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Paragraph 0171, (2018/06/15)
This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.
Sterically Demanding Oxidative Amidation of α-Substituted Malononitriles with Amines Using O2
Li, Jing,Lear, Martin J.,Hayashi, Yujiro
supporting information, p. 9060 - 9064 (2016/07/26)
An efficient amidation method between readily available 1,1-dicyanoalkanes and either chiral or nonchiral amines was realized simply with molecular oxygen and a carbonate base. This oxidative protocol can be applied to both sterically and electronically challenging substrates in a highly chemoselective, practical, and rapid manner. The use of cyclopropyl and thioether substrates support the radical formation of α-peroxy malononitrile species, which can cyclize to dioxiranes that can monooxygenate malononitrile α-carbanions to afford activated acyl cyanides capable of reacting with amine nucleophiles.
Hybrid P-chiral diphosphines for asymmetric hydrogenation
Carmichael, Duncan,Doucet, Henri,Brown, John M.
, p. 261 - 262 (2007/10/03)
A family of diphosphine ligands has been prepared by Michael addition of o-anisylphenyl phosphide to diethyl vinylphosphonate and elaboration to phospholanes based on hexane-2,5-diol or mannitol; some preliminary results of Rh-complex catalysed hydrogenations are reported.