ChemInform Abstract: Active Palladium Catalyst Supported by Bulky Diimine Ligand Catalyzed Suzuki-Miyaura Coupling Reaction in Water under Phosphane-Free and Low Catalyst Loading Conditions.

ChemInform ◽  
2014 ◽  
Vol 45 (35) ◽  
pp. no-no
Author(s):  
Mohammad Gholinejad ◽  
Vahid Karimkhani ◽  
Il Kim
Keyword(s):  
Palladium Catalyst ◽  
Coupling Reaction ◽  
Catalyst Loading ◽  
Loading Conditions ◽  
Diimine Ligand ◽  
Low Catalyst Loading ◽  
Reaction In Water

Formation of Acetals and Ketals from Carbonyl Compounds: A New and Highly Efficient Method Inspired by Cationic Palladium

Synlett ◽  
2019 ◽  
Vol 30 (15) ◽  
pp. 1810-1814 ◽  
Author(s):  
Enoch A. Mensah ◽  
Shawn D. Green ◽  
Jesse West ◽  
Tyler Kindoll ◽  
Brenda Lazaro-Martinez
Keyword(s):  
Efficient Method ◽  
Palladium Catalyst ◽  
Carbonyl Compounds ◽  
Catalyst Loading ◽  
Carbonyl Groups ◽  
Simple Method ◽  
Ambient Temperatures ◽  
Highly Efficient ◽  
Low Catalyst Loading ◽  
Cationic Palladium

The development of a new, highly efficient, and simple method for masking carbonyl groups as acetals and ketals is described. This methodology relies on the nature of the palladium catalyst to direct the acetalization/ketalization reaction. This new protocol is mild and proceed with a very low catalyst loading at ambient temperatures. The method has been extended to a wide variety of different carbonyl compounds with various steric encumbrances to form the corresponding acetals and ketals in excellent yields.

Bis[N,N′-(2-indanolyl)]-1,5-diazacyclooctane as Unique Metal Ligand: Self-Assembly of Palladium Nanoparticles and Catalytic Reactivity on C–C Bond Formation

Synthesis ◽  
2017 ◽  
Vol 50 (05) ◽  
pp. 1097-1104 ◽  
Author(s):  
Katsunori Tanaka ◽  
Katsumasa Fujiki
Keyword(s):  
Heterogeneous Catalyst ◽  
Self Assembly ◽  
Palladium Nanoparticles ◽  
Bond Formation ◽  
Suzuki Coupling ◽  
Catalyst Loading ◽  
Loading Conditions ◽  
Catalytic Reactivity ◽  
Low Catalyst Loading ◽  
Metal Ligand

A previously unreported 1,5-diazacyclooctane-palladium(II) complex was synthesized using bis[N,N′-(2-indanolyl)]-1,5-diazacyclooctane, which was readily prepared via a novel [4+4] homocyclization of the unsaturated imine intermediate generated from acrolein and 1-amino-2-indanol. Interestingly, the 1,5-diazacyclooctane-palladium(II) complex self-assembled to form palladium nanoparticles. This approach readily provided palladium nanoparticles simply by heating a mixture of palladium(II) acetate and bis[N,N′-(2-indanolyl)]-1,4-diazacyclooctane in dichloroethane at mild temperatures. The 1,5-diazacyclooctane-derivative-palladium nanoparticles were successfully deployed in synthetic applications as a heterogeneous catalyst, facilitating Suzuki coupling and a challenging C–C bond formation via C(sp3)–H activation under low catalyst loading conditions.

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