Ru-Based Catechothiolate Complexes Bearing an Unsaturated NHC Ligand: Effective Cross-Metathesis Catalysts for Synthesis of (Z)-α,β-Unsaturated Esters, Carboxylic Acids, and Primary, Secondary, and Weinreb Amides

2019 ◽  
Vol 141 (17) ◽  
pp. 7137-7146 ◽  
Author(s):  
Zhenxing Liu ◽  
Chaofan Xu ◽  
Juan del Pozo ◽  
Sebastian Torker ◽  
Amir H. Hoveyda
Keyword(s):  
Carboxylic Acids ◽  
Unsaturated Esters ◽  
Weinreb Amides ◽  
Cross Metathesis ◽  
Metathesis Catalysts

scholarly journals Synthesis of Linear (Z )-α,β-Unsaturated Esters by Catalytic Cross-Metathesis. The Influence of Acetonitrile

2016 ◽  
Vol 55 (42) ◽  
pp. 13210-13214 ◽  
Author(s):  
Elsie C. Yu ◽  
Brett M. Johnson ◽  
Erik M. Townsend ◽  
Richard R. Schrock ◽  
Amir H. Hoveyda
Keyword(s):  
Unsaturated Esters ◽  
Cross Metathesis

Asymmetric Synthesis of Ethers by Catalytic Alkene Hydro­alkoxy­lation

Synthesis ◽  
2020 ◽  
Vol 52 (15) ◽  
pp. 2127-2146
Author(s):  
Zhi Li ◽  
Wen-Bin Xie
Keyword(s):  
Asymmetric Synthesis ◽  
Carboxylic Acids ◽  
Carbonyl Compounds ◽  
High Reactivity ◽  
Enol Ethers ◽  
Unsaturated Esters ◽  
Unsaturated Ketones ◽  
Recent Developments ◽  
Catalytic Asymmetric

Many chiral ethers have important physiological activities. Although many asymmetric hydroalkoxylations of olefins with alcohols or phenols have been developed to make chiral ethers, challenges still remain in achieving high reactivity and selectivity over an ever-increasing diversity of alkenes and alcohols. In this review, recent developments on catalytic asymmetric alkene hydroalkoxylations are summarized based on the substitution patterns of alkenes.1 Introduction2 Asymmetric Hydroalkoxylation of Non-Activated Alkenes2.1 Intramolecular Additions2.2 Intermolecular Additions3 Asymmetric Hydroalkoxylation of Enol Ethers3.1 Intramolecular Additions3.2 Intermolecular Additions4 Asymmetric Hydroalkoxylation of α,β-Unsaturated Carbonyl Compounds4.1 α,β-Unsaturated Ketones and Aldehydes as Substrates4.2 α,β-Unsaturated Esters, Amides and Carboxylic Acids as Substrates5 Asymmetric Hydroalkoxylation of Allenes5.1 Intramolecular Additions5.2 Intermolecular Additions6 Conclusion

A Convenient Method for the Conversion of Hindered Carboxylic Acids toN-Methoxy-N-methyl (Weinreb) Amides

2004 ◽  
Vol 69 (25) ◽  
pp. 8984-8986 ◽  
Author(s):  
Jacqueline C. S. Woo ◽  
Erik Fenster ◽  
Gregory R. Dake
Keyword(s):  
Carboxylic Acids ◽  
Convenient Method ◽  
Weinreb Amides

An Overview of Synthetic Methods for the Preparation of Halolactones

2019 ◽  
Vol 16 (1) ◽  
pp. 98-111 ◽  
Author(s):  
Małgorzata Grabarczyk ◽  
Katarzyna Wińska ◽  
Wanda Mączka
Keyword(s):  
Secondary Metabolites ◽  
Chemical Synthesis ◽  
Carboxylic Acids ◽  
Synthetic Methods ◽  
Unsaturated Esters ◽  
Racemic Mixtures ◽  
Unsaturated Carboxylic Acids ◽  
Living Organisms

Halolactones are used both in chemical synthesis as intermediates as well as in various industries. These compounds may be secondary metabolites of living organisms, although they are mainly obtained by chemical synthesis. The substrates for the synthesis of chloro-, bromo- and iodolactones are often unsaturated carboxylic acids, and sometimes they are unsaturated esters. The article presents a number of different methods for the production of halolactones, both racemic mixtures and enantiomerically enriched compounds.

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