79354-30-6Relevant articles and documents
Steric factors on unsymmetrical O-hydroxyaryl N-Heterocyclic carbene ligands prevailing the stabilization of single stereoisomer of bis-ligated titanium complexes
Quadri, Coralie C.,Lalrempuia, Ralte,Fr?ystein, Nils ?ge,T?rnroos, Karl W.,Le Roux, Erwan
, p. 106 - 116 (2018)
Bis-ligated titanium (IV) metal complexes supported by bidentate unsymmetrical o-hydroxyaryl-substituted N-heterocyclic carbene ligands were synthesized and structurally identified. While the direct addition of the doubly deprotonated bulky imidazolidiniu
Chiral secondary phosphine oxide pre-ligand and application thereof
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Paragraph 0049-0052, (2021/10/20)
The invention discloses a chiral secondary phosphine oxide pre-ligand and application thereof. The structure of the ligand is as shown in Formula I, where R. 1 . R2 , R3 And R4 Hydrogen, benzyl, substituted alkyl, substituted or unsubstituted aryl. The more preferred structural formula comprises 4 structural general formulas shown in the general formula I in the following formula: I-d, and the formula is shown in the general formula. Based on the designed asymmetric catalytic reaction system, the stability and the easy preparation of the comprehensive test ligand under the hydrocarbon activation condition are synthesized, and finally the chiral secondary oxidation phosphorus precursor with the double functional groups in the oxidation and heating environment is selected. The catalyst formed by the front ligand and the active metal compound has high activity and high selectivity in the reaction of constructing a chiral center, and has the stability.
Visible-light mediated carbamoyl radical addition to heteroarenes
Jatoi, Ashique Hussain,Pawar, Govind Goroba,Robert, Frédéric,Landais, Yannick
supporting information, p. 466 - 469 (2019/01/10)
The generation of carbamoyl radicals, followed by their addition to heteroarenes, was performed under mild conditions through a metal-free photocatalyzed decarboxylation of oxamic acids. The process has been applied to the carbamoylation of heteroaromatic bases using α-aminoacid-derived oxamic acids, leading to the corresponding amides without racemization.