- 2. 2' - Benzyl - different substituted [...] ethyl aluminum compound and its preparation method
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The invention relates to a 2, 2' - benzyl - different substituted [...] ethyl aluminum compound and its preparation method, its preparation method is as follows: the benzaldehyde and containing different substituent of the phenol to the molar ratio of 1:2
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Paragraph 0015-0016
(2018/09/29)
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- Regiospecific, one-pot, and pseudo-five-component synthesis of 6,6′-(arylmethylene)bis(2-(tert -butyl)4-methylphenol) antioxidants using highly sulfonated multi-walled carbon nanotubes under solvent-free conditions
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This is the first report of an innovative, one-pot, pseudo-five-component, and solvent-free synthesis of 6,6′-(arylmethylene)bis(2-(tert-butyl)4- methylphenol) antioxidants from p-cresol, methyl tert-butyl ether, and aldehydes in the presence of sulfonate
- Fareghi-Alamdari, Reza,Golestanzadeh, Mohsen,Agend, Farima,Zekri, Negar
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p. 982 - 991
(2013/10/08)
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- Optimization of asymmetric catalysts using achiral ligands: metal geometry-induced ligand asymmetry.
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[reaction: see text] Traditionally, asymmetric catalysts have been optimized by modification of resolved chiral ligands. In this Letter, we optimize the asymmetric addition of diethylzinc to aldehydes by modification of achiral methylene bis(phenol) ligands. Upon coordination of the substrate, the achiral ligand becomes asymmetric, a concept termed Metal Geometry-Induced Ligand Asymmetry. The enantioselectivity of the catalyst formed from a single resolved ligand and several achiral ligands ranged from 9% (R) to 83% (S).
- Davis,Balsells,Carroll,Walsh
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p. 2161 - 2164
(2007/10/03)
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