Inducing Enantioselectivity in a Dynamic Catalyst by Supramolecular Interlocking
The design of a new class of fluxional biphenyl bisphosphinite (BIBIPHOS) ligands decorated with amino acid-based diamide interaction sites is reported that undergo spontaneous desymmetrization. Hydrogenation of prochiral alkenes using Rh-BIBIPHOS results
Scholtes, Jan Felix,Trapp, Oliver
supporting information
p. 6306 - 6310
(2019/04/03)
Supramolecular Interlocked Biphenyl Ligands for Enantioselective Ti-Catalyzed Alkylation of Aromatic Aldehydes
The substitution of tropos 2,2′-biphenols with (S)-amino-acid-derived interaction sites in the 5,5′-position results in a spontaneous desymmetrization. This process is driven by well-defined intermolecular hydrogen bonding, which leads to diastereoselecti
Scholtes, Jan Felix,Trapp, Oliver
supporting information
p. 3955 - 3960
(2019/07/03)
Process for preparing biphenyl compounds
The present invention relates to a process for preparing a compound having the formula (I), said process comprising the following steps: a) the addition of an oxygen source into a solution of a compound of formula (II), in a water-miscible solvent, b) the addition of a laccase in the solution obtained after step a); and c) the possible recovering of the compound of formula (I) thus obtained.
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Page/Page column 28
(2019/01/04)
NOVEL MANUFACTURING METHOD OF LOW MOLECULAR COMPOUND FROM LIGNIN
PROBLEM TO BE SOLVED: To provide a manufacturing method of dehydro divanillic acid dialkyl ester using lignin contained in a needle-leaves trees or the like as a raw material. SOLUTION: The manufacturing method of dehydro divanillic acid dialkyl ester through following process 1 to process 5 with using lignin as a raw material. Process 1: a process for conducting an oxidation reaction on the lignin. Process 2: a process for purifying a reaction product obtained in the process 1. Process 3: a process for conducting the oxidation reaction on a component obtained in the process 2. Process 4: a process for conducting an esterification reaction on a reaction product of the process 3 and alcohol. Process 5: a process for conducting a coupling reaction (dimerization reaction) on a reaction product in the process 4. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
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Paragraph 0061
(2018/02/10)
Supramolecular-directed chiral induction in biaryl derivatives
(Chemical Equation Presented) A thermodynamically controlled resolution has allowed for the generation of diastereomerically enriched complexes, by chirality transfer from an enantiopure building block to a dynamically racemic biaryl derivative. A switcha