Palladium-catalyzed alternating copolymerization of propylene and carbon monoxide. Formation of poly(spiroketal/ketone)

1993 ◽  
Vol 32 (5) ◽  
pp. 986-988 ◽  
Author(s):  
Pui Kwan Wong ◽  
Johannes A. Van Doorn ◽  
Eit Drent ◽  
Olaf Sudmeijer ◽  
Hans A. Stil
Keyword(s):  
Carbon Monoxide ◽  
Palladium Catalyzed ◽  
Carbon Monoxide Formation ◽  
Alternating Copolymerization

Palladium-catalyzed alternating copolymerization of carbon monoxide with olefins bearing carbamate and amide functionalities

2001 ◽  
Vol 79 (5-6) ◽  
pp. 587-592 ◽  
Author(s):  
Christophe Moineau ◽  
Giuseppe Mele ◽  
Howard Alper
Keyword(s):  
Carbon Monoxide ◽  
Optically Active ◽  
New Class ◽  
Palladium Catalyzed ◽  
Alternating Copolymerization

The copolymerization of carbon monoxide with different olefins bearing carbamate and amide functionalities was effected using [Pd(CH3CN)4](BF4)2 as the catalyst and (R,R)-Me-DUPHOS (2:1 (v/v) MeNO2–MeOH or CH2Cl2 as the solvent). The products constitute a new class of functionalized copolymers, and were found to be optically active with a mixture of 1,4-ketone and spiroketal repeating units in the backbone. The influence of different parameters on the copolymerization of methyl N-(3-butenyl)carbamate with carbon monoxide was examined.Key words: copolymerization, carbon monoxide, olefins bearing carbamate and amide functionalities.

Studies on Influencing Factors of Polyketone Molecular Weight by Palladium Catalyzed Alternating Copolymerization with Carbon Monoxide and Ethylene

2013 ◽  
Vol 634-638 ◽  
pp. 2014-2018
Author(s):  
Jia Yao Du ◽  
Liang Chen ◽  
Wen Wei ◽  
Lin Deng ◽  
Ling Gao ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Carbon Monoxide ◽  
Water Content ◽  
Temperature Rise ◽  
Palladium Catalyzed ◽  
System Temperature ◽  
Main Factors ◽  
Increasing Temperature ◽  
Alternating Copolymerization ◽  
Strong Acids

With Pd(AcO)2DPPP as catalytic precursor of CO/C2H4 alternating copolymerization. The main factors which affect the molecular weight of polyketone were studied. The results showed that: Temperature was the most important factor in copolymerization. The polyketone molecular weight lower faster with increasing temperature, have a decrease of 53% when system temperature rise from 70°C to 80°C, and the palladium-catalyzed progenitor easy to decomposition and become deactivation. Adding pressure was in favor of the increase of copolymerization rate and molecular weight. Water content in methanol solvent was sensitive to copolymerization rate, as far as molecular weight was concerned, it made no difference. HClO4 and other strong acids in the catalytic system will help improve the molecular weight of the polyketone.

Palladium-catalyzed carbonylation of 1,5-cyclooctadiene. Effects of temperature and pressure

1991 ◽  
Vol 56 (3) ◽  
pp. 663-672 ◽  
Author(s):  
Curtis B. Anderson ◽  
Rade Marković
Keyword(s):  
Carbon Monoxide ◽  
Oxidative Carbonylation ◽  
Influence Of Temperature ◽  
Carbonylation Reaction ◽  
Palladium Catalyzed ◽  
Effects Of Temperature ◽  
Temperature And Pressure

The influence of temperature and carbon monoxide pressure on the course of oxidative carbonylation reaction of 1,5-cyclooctadiene in the presence of the palladium(II) salts as a catalyst, was investigated.

Intermolecular C–H Amidation of Alkenes with Carbon Monoxide and Azides via Tandem Palladium Catalysis

Synthesis ◽  
2021 ◽  
Author(s):  
Zheng-Yang Gu ◽  
Yang Wu ◽  
Feng Jin ◽  
Bao Xiaoguang ◽  
Ji-Bao Xia
Keyword(s):  
Carbon Monoxide ◽  
Palladium Catalysis ◽  
Computational Studies ◽  
Organic Azides ◽  
Reaction Proceeds ◽  
Palladium Catalyzed ◽  
Directing Group ◽  
And Control

An atom- and step-economic intermolecular multi-component palladium-catalyzed C–H amidation of alkenes with carbon monoxide and organic azides has been developed for the synthesis of alkenyl amides. The reaction proceeds efficiently without an ortho-directing group on the alkene substrates. Nontoxic dinitrogen is generated as the sole by-product. Computational studies and control experiments have revealed that the reaction takes place via an unexpected mechanism by tandem palladium catalysis.

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