General H2 Activation Modes for Lewis Acid–Transition Metal Bifunctional Catalysts

ACS Catalysis ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 1655-1662 ◽  
Author(s):  
Yinwu Li ◽  
Cheng Hou ◽  
Jingxing Jiang ◽  
Zhihan Zhang ◽  
Cunyuan Zhao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Bifunctional Catalysts

scholarly journals Boron-Based Lewis Acid Transition Metal Complexes as Potential Bifunctional Catalysts

2017 ◽  
Vol 37 (9) ◽  
pp. 2187 ◽  
Author(s):  
Yinwu Li ◽  
Jianyu Zhang ◽  
Siwei Shu ◽  
Youxiang Shao ◽  
Yan Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Lewis Acid ◽  
Bifunctional Catalysts

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.

Adducts of the Lewis acid [B(C6F5)3] with transition metal oxo compounds

1999 ◽  
pp. 1061-1066 ◽  
Author(s):  
Georgina Barrado ◽  
Linda Doerrer ◽  
Malcolm L. H. Green ◽  
Michael A. Leech
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Oxo Compounds

Metathetical Degradation and Depolymerization of Unsaturated Polymers

1997 ◽  
Vol 70 (3) ◽  
pp. 519-529 ◽  
Author(s):  
J. C. Marmo ◽  
K. B. Wagener
Keyword(s):  
Molecular Weight ◽  
Transition Metal ◽  
Catalytic System ◽  
Lewis Acid ◽  
Catalyst System ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Side Reactions

Abstract The employment of transition metal catalysts has been a viable route in the degradation and depolymerization of unsaturated polymers. Initially, unsaturated polymers were degraded with a catalytic system containing a transition metal and a Lewis acid cocatalyst (WCl6/SnBu4). Degradation chemistry was effective in reducing the molecular weight of the polymer, however, the classical catalyst system induces side reactions which generates ill-defined products. These side reactions were obviated by using a preformed alkylidene without a Lewis acid cocatalyst, and perfectly difunctional telechelics were synthesized.

scholarly journals Recent Developments in Polyene Cyclizations and Their Applications in Natural Product Synthesis

Synthesis ◽  
2018 ◽  
Vol 51 (01) ◽  
pp. 67-82 ◽  
Author(s):  
Anthony Barrett ◽  
Tsz-Kan Ma ◽  
Thomas Mies
Keyword(s):  
Transition Metal ◽  
Natural Product ◽  
Lewis Acid ◽  
Multiple Bond ◽  
Natural Product Synthesis ◽  
Cyclization Reactions ◽  
Cascade Cyclizations ◽  
Highly Efficient ◽  
Recent Developments ◽  
Radical Cascade

Cascade polyene cyclization reactions are highly efficient and elegant bioinspired transformations that involve simultaneous multiple bond constructions to rapidly generate complex polycyclic molecules. This review summarizes the most prominent work on a variety of cationic and radical cascade cyclizations and their applications in natural product synthesis published between 2014 and 2018.1 Introduction2 Cationic Polyene Cyclizations2.1 Lewis Acid Mediated Polyene Cyclizations2.2 Brønsted Acid Mediated Polyene Cyclizations2.3 Halogen Electrophile Initiated Polyene Cyclizations2.4 Sulfur Electrophile Initiated Polyene Cyclizations2.5 Transition-Metal-Mediated Cationic Polyene Cyclizations3 Radical Polyene Cyclizations3.1 Transition-Metal-Mediated Radical Polyene Cyclizations3.2 Photocatalyst-Mediated Polyene Cyclizations4 Origin of Stereocontrol in Polyene Cyclizations5 Conclusion

Erratum to “Synthesis and structure of potential Lewis acid–Lewis base bifunctional catalysts: 2-N,N-diisopropylaminobenzylboronate derivatives” [J. Organomet. Chem. 690 (2005) 4784–4793]

2006 ◽  
Vol 691 (3) ◽  
pp. 538
Author(s):  
Samuel W. Coghlan ◽  
Richard L. Giles ◽  
Judith A.K. Howard ◽  
Leonard G.F. Patrick ◽  
Michael R. Probert ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Lewis Base ◽  
Bifunctional Catalysts

Novel Naproxen Derivatives: Lewis Acid/Transition-metal Free Synthesis via C-C Bond Forming Reaction

2007 ◽  
Vol 4 (4) ◽  
pp. 292-295 ◽  
Author(s):  
Sarbani Pal ◽  
P. Bindu ◽  
Pragnyadhar Reddy Venna ◽  
P. K. Dubey
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Metal Free ◽  
Bond Forming
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