scholarly journals Highly Active Cooperative Lewis Acid – Ammonium Salt Catalyst for the Enantioselective Hydroboration of Ketones

2020 ◽  
Author(s):  
Marvin Titze ◽  
Juliane Heitkämper ◽  
Thorsten Junge ◽  
Johannes Kästner ◽  
René Peters
Keyword(s):  
Ammonium Salt ◽  
Lewis Acid ◽  
Highly Active

scholarly journals Highly Active Cooperative Lewis Acid – Ammonium Salt Catalyst for the Enantioselective Hydroboration of Ketones

2020 ◽  
Author(s):  
Marvin Titze ◽  
Juliane Heitkämper ◽  
Thorsten Junge ◽  
Johannes Kästner ◽  
René Peters
Keyword(s):  
Ammonium Salt ◽  
Lewis Acid ◽  
Highly Active

Development of silica-supported frustrated Lewis pairs: highly active transition metal-free catalysts for the Z-selective reduction of alkynes

2016 ◽  
Vol 6 (3) ◽  
pp. 882-889 ◽  
Author(s):  
Kai C. Szeto ◽  
Wissam Sahyoun ◽  
Nicolas Merle ◽  
Jessica Llop Castelbou ◽  
Nicolas Popoff ◽  
...  
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Selective Reduction ◽  
Frustrated Lewis Pairs ◽  
Acid Base ◽  
Metal Free ◽  
Highly Active ◽  
Active Transition ◽  
Lewis Pairs

Supported Lewis acid/base systems based have been prepared and characterized.

Hydrothermal synthesis of Sn-Beta zeolites in F−-free medium

2018 ◽  
Vol 5 (11) ◽  
pp. 2763-2771 ◽  
Author(s):  
Hao Xu ◽  
Xudong Wang ◽  
Peng Ji ◽  
Haihong Wu ◽  
Yejun Guan ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Lewis Acid ◽  
Crystal Size ◽  
Acid Catalysts ◽  
Free Medium ◽  
Lewis Acid Catalysts ◽  
Structure Directing Agent ◽  
Highly Active ◽  
Beta Zeolites

Sn-Beta zeolites, with high Sn content and smaller crystal size, hydrothermally synthesized in F−-free medium using N-cyclohexyl-N,N-dimethylcyclohexanaminium hydroxide as the structure-directing agent with the assistance of Na+ and seed, are highly active as Lewis acid catalysts.

scholarly journals Enantioselective Diels–Alder reaction of anthracene by chiral tritylium catalysis

2019 ◽  
Vol 15 ◽  
pp. 1304-1312 ◽  
Author(s):  
Qichao Zhang ◽  
Jian Lv ◽  
Sanzhong Luo
Keyword(s):  
Lewis Acid ◽  
Acid Catalyst ◽  
Alder Reaction ◽  
Ion Pair ◽  
Diels Alder ◽  
Highly Active ◽  
Diels Alder Reaction ◽  
New Type ◽  
Lewis Acid Catalyst ◽  
Trityl Cation

The combination of the trityl cation and a chiral weakly coordinating Fe(III)-based bisphosphate anion was used to develop a new type of a highly active carbocation Lewis acid catalyst. The stereocontrol potential of the chiral tritylium ion pair was demonstrated by its application in an enantioselective Diels–Alder reaction of anthracene.

Enantiomer-Selective Carbamoylation of Racemic α-Hydroxy γ-Lactones with Chiral CuIICatalysts: An Example of a Highly Active Lewis Acid Catalyzed Reaction

2008 ◽  
Vol 3 (8-9) ◽  
pp. 1289-1297 ◽  
Author(s):  
Nobuhito Kurono ◽  
Tadahiro Kondo ◽  
Masanori Wakabayashi ◽  
Hirohito Ooka ◽  
Tsutomu Inoue ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Highly Active ◽  
Acid Catalyzed

Unveiling reactive metal sites in a Pd pincer MOF: insights into Lewis acid and pore selective catalysis

2019 ◽  
Vol 48 (26) ◽  
pp. 9588-9595 ◽  
Author(s):  
Benjamin R. Reiner ◽  
Abebu A. Kassie ◽  
Casey R. Wade
Keyword(s):  
Lewis Acid ◽  
Ligand Exchange ◽  
Acid Catalyst ◽  
Reactive Metal ◽  
Highly Active ◽  
Lewis Acid Catalyst ◽  
Selective Catalysis

NOBF4 enables efficient oxidative ligand exchange in a Pd pincer MOF, generating a highly active and recyclable Lewis acid catalyst.

Structural reconstruction: a milestone in the hydrothermal synthesis of highly active Sn-Beta zeolites

2017 ◽  
Vol 53 (93) ◽  
pp. 12516-12519 ◽  
Author(s):  
Zhiguo Zhu ◽  
Hao Xu ◽  
Jingang Jiang ◽  
Haihong Wu ◽  
Peng Wu
Keyword(s):  
Hydrothermal Synthesis ◽  
Lewis Acid ◽  
State Of The Art ◽  
Highly Active ◽  
Beta Zeolites ◽  
Acid Catalyzed ◽  
Catalyzed Reactions ◽  
Catalytic Performances

Hydrophobic Sn-Beta zeolites, hydrothermally synthesized via structural reconstruction, exhibit unparalleled catalytic performances for Lewis acid-catalyzed reactions, far outperforming post-synthesized Sn-Beta and state-of-the-art Sn-Beta-F materials.

Highly active, water-compatible and easily separable magnetic mesoporous Lewis acid catalyst for the Mukaiyama–Aldol reaction in water

2014 ◽  
Vol 16 (8) ◽  
pp. 3768-3777 ◽  
Author(s):  
Fang Zhang ◽  
Xiaotao Wu ◽  
Chao Liang ◽  
Xiaoyan Li ◽  
Zhen Wang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Lewis Acid ◽  
Aldol Reaction ◽  
Acid Catalyst ◽  
Mukaiyama Aldol Reaction ◽  
Highly Active ◽  
Mukaiyama Aldol ◽  
Lewis Acid Catalyst ◽  
Reaction In Water ◽  
Magnetic Mesoporous Silica

A multifunctional magnetic mesoporous silica supported Yb(OTf)3 composite was demonstrated to be an efficient and easily recyclable catalyst for the Mukaiyama–Aldol reaction in water.

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