ChemInform Abstract: Highly Efficient Asymmetric anti-Mannich Reactions of Carbonyl Compounds with N-Carbamoyl Imines Catalyzed by Amino-Thiourea Organocatalysts.

ChemInform ◽  
2012 ◽  
Vol 43 (38) ◽  
pp. no-no
Author(s):  
Jiuzhi Gao ◽  
Yongming Chuan ◽  
Jiali Li ◽  
Fang Xie ◽  
Yungui Peng
Keyword(s):  
Carbonyl Compounds ◽  
Mannich Reactions ◽  
Highly Efficient

Selective hydrogenation of α,β-unsaturated carbonyl compounds on silica-supported copper nanoparticles

2019 ◽  
Vol 55 (2) ◽  
pp. 179-181 ◽  
Author(s):  
Jorge Mendes-Burak ◽  
Behnaz Ghaffari ◽  
Christophe Copéret
Keyword(s):  
Organometallic Chemistry ◽  
Copper Nanoparticles ◽  
Selective Hydrogenation ◽  
Carbonyl Compounds ◽  
Highly Efficient ◽  
Surface Organometallic Chemistry

Silica-supported copper nanoparticles prepared via surface organometallic chemistry are highly efficient for the selective hydrogenation of various α,β-unsaturated carbonyl compounds yielding the corresponding saturated esters, ketones, and aldehydes in the absence of additives.

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.

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