Pd-catalyzed Fukuyama cross-coupling of secondary organozinc reagents for the direct synthesis of unsymmetrical ketones
作者:Alan H. Cherney、Sarah E. Reisman
DOI:10.1016/j.tet.2013.11.104
日期:2014.5
organometallic reagents represents a convergent route toward complex and versatile ketone products. Despite the mild conditions and high functional group tolerance, the cross-coupling of carboxylic acid derivatives, such as thioesters, and secondary organometallic reagents is an underdeveloped transformation. Herein, we disclose a convenient and efficient protocol for the Pd-catalyzed Fukuyama cross-coupling
Nickel-Catalyzed Cross-Coupling of Alkyl Carboxylic Acid Derivatives with Pyridinium Salts via C–N Bond Cleavage
作者:Feba Thomas Pulikottil、Ramadevi Pilli、Rohith Valavil Suku、Ramesh Rasappan
DOI:10.1021/acs.orglett.0c00554
日期:2020.4.17
The electrophile–electrophile cross-coupling of carboxylicacid derivatives and alkylpyridinium salts via C–N bond cleavage is developed. The method is distinguished by its simplicity and steers us through a variety of functionalized ketones in good to excellent yields. Besides acid chlorides, carboxylicacids were also employed as acylating agents, which enabled us to incorporate acid-sensitive functional
Factors affecting reactions of trialkylcyanoborates with imidoyl chlorides/trifluoroacetic anhydride
作者:Dyfyr Heulyn Jones、Keith Smith、Mark C. Elliott、Gamal A. El-Hiti
DOI:10.1016/j.tet.2015.06.038
日期:2015.9
for the synthesis of quaternary carbon centres. Herein we report investigations into generation of tert-alkyl organoboron species using imidoyl chlorides as reagents in the organoboron cyanidation reaction. Although alkenyl side-products predominate in particularly hindered cases, tert-alkyl organoboron species can be successfully generated for less hindered examples.