Synthesis of Carbazoles by a Diverted Bischler–Napieralski Cascade Reaction
作者:Matteo Faltracco、Said Ortega-Rosales、Elwin Janssen、Răzvan C. Cioc、Christophe M. L. Vande Velde、Eelco Ruijter
DOI:10.1021/acs.orglett.1c00785
日期:2021.4.16
An unforeseen twist in a seemingly trivial Bischler–Napieralskireaction led to the selective formation of an unexpected carbazole product. The reaction proved to be general, providing access to a range of diversely substituted carbazoles from readily available substrates. Judicious variation of substituents revealed a complex cascade mechanism comprising no less than 10 elementary steps, that could
Electrochemical carboxylation of benzylic carbonates was successfully performed as an alternative method for the synthesis of phenylacetic acids by using a one-compartment cell equipped with a Pt plate cathode and an Mg rod anode in CH3CN to afford the corresponding phenylacetic acids in good yields.
Enantioselective Epoxidation of β,γ-Unsaturated Carboxylic Acids by a Cooperative Binuclear Titanium Complex
作者:Takahiro Sawano、Hisashi Yamamoto
DOI:10.1021/acscatal.9b00840
日期:2019.4.5
Enantioselective epoxidation of β,γ-unsaturated carboxylicacids with a cooperative binuclear titanium complex has been developed to provide single diastereomer γ-lactones in high yields and enantioselectivities via intramolecular cyclization. For the success of the reaction, the proper distance between the carboxylicacid and alkene is quite important, offering the regioselective epoxidation of unsaturated