Catalytic Regioselective Benzoylation of 1,2-trans-Diols in Carbohydrates with Benzoyl Cyanide: The Axial Oxy Group Effect and the Action of Achiral and Chiral Amine Catalysts

ACS Catalysis ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11406-11416 ◽  
Author(s):  
Tianlu Li ◽  
Tong Li ◽  
Michael Linseis ◽  
Fengshan Wang ◽  
Rainer F. Winter ◽  
...  
Keyword(s):  
Group Effect ◽  
Chiral Amine ◽  
Benzoyl Cyanide ◽  
Amine Catalysts

ChemInform Abstract: Direct Regiospecific and Highly Enantioselective Intermolecular α-Allylic Alkylation of Aldehydes by a Combination of Transition-Metal and Chiral Amine Catalysts.

ChemInform ◽  
2012 ◽  
Vol 43 (29) ◽  
pp. no-no
Author(s):  
Samson Afewerki ◽  
Ismail Ibrahem ◽  
Jonas Rydfjord ◽  
Palle Breistein ◽  
Armando Cordova
Keyword(s):  
Transition Metal ◽  
Allylic Alkylation ◽  
Chiral Amine ◽  
Amine Catalysts

Noncovalently Supported Heterogeneous Chiral Amine Catalysts for Asymmetric Direct Aldol and Michael Addition Reactions

2008 ◽  
Vol 14 (4) ◽  
pp. 1273-1281 ◽  
Author(s):  
Sanzhong Luo ◽  
Jiuyuan Li ◽  
Long Zhang ◽  
Hui Xu ◽  
Jin-Pei Cheng
Keyword(s):  
Michael Addition ◽  
Addition Reactions ◽  
Chiral Amine ◽  
Amine Catalysts

Direct Regiospecific and Highly Enantioselective Intermolecular α-Allylic Alkylation of Aldehydes by a Combination of Transition-Metal and Chiral Amine Catalysts

2012 ◽  
Vol 18 (10) ◽  
pp. 2972-2977 ◽  
Author(s):  
Samson Afewerki ◽  
Ismail Ibrahem ◽  
Jonas Rydfjord ◽  
Palle Breistein ◽  
Armando Córdova
Keyword(s):  
Transition Metal ◽  
Allylic Alkylation ◽  
Chiral Amine ◽  
Amine Catalysts

Regioselective benzoylation of unprotected β-glycopyranosides with benzoyl cyanide and an amine catalyst – application to saponin synthesis

2021 ◽  
Author(s):  
Tianlu Li ◽  
Tong Li ◽  
Yajing Sun ◽  
Yue Yang ◽  
Panpan Lv ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
Benzoyl Cyanide ◽  
Amine Catalysts

Regioselective protection of trans-trans triol and tetrol moieties in carbohydrates was achieved with BzCN as the benzoylating agent and amine catalysts. The protocols are useful for the chemical synthesis of oligosaccharides and saponins.

Regio-, Stereo- and Enantioselective α-Addition of Carbonyl Nucleo-philes to Allenamides Catalyzed by a Synergistic Copper/Enamine System

2020 ◽  
Author(s):  
Rémi Blieck ◽  
Sebastien Lemouzy ◽  
Marc Taillefer ◽  
Florian Monnier
Keyword(s):  
Catalytic System ◽  
Secondary Amine ◽  
Primary Amine ◽  
Synergistic Catalysis ◽  
Enantioselective Addition ◽  
Amine Catalysts

A dual copper/enamine catalytic system is found to enable an intermolecular enantioselective α-addition of various carbonyl nucleophiles to allenamides. Secondary amine catalysts allowed the highly enantioselective addition of aldehydes, while using primary amine catalysts led to the enantioselective addition of ketoester nucleophiles. The process was found to be highly regio-, stereo- and enantio-selective and represented the first allene hydrofunctionalization using an synergistic catalysis involving copper

Continuous production of a chiral amine in a packed bed reactor with co-immobilized amine dehydrogenase and formate dehydrogenase

2021 ◽  
Vol 407 ◽  
pp. 127065
Author(s):  
Robert D. Franklin ◽  
Joshua A. Whitley ◽  
Adam A. Caparco ◽  
Bettina R. Bommarius ◽  
Julie A. Champion ◽  
...  
Keyword(s):  
Formate Dehydrogenase ◽  
Continuous Production ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Chiral Amine ◽  
Amine Dehydrogenase
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