Thieme Chemistry Journal Awardees - Where
Are They Now? Aerobic Oxidative Coupling of Tertiary Amines
with Silyl Enolates and Ketene Acetals
作者:Martin Klussmann、Devarajulu Sureshkumar、Abhishek Sud
DOI:10.1055/s-0029-1217336
日期:——
Cyclic tertiary amines can be oxidatively coupled with a variety of silyl enol ethers or ketene acetals to furnish tertiary Mannich bases. The reactions are catalyzed by simple copper salts employing elemental oxygen as the oxidant.
Unified Approach to Isoindolinones and THIQs via Lewis Acid Catalyzed Domino Mukaiyama–Mannich Lactamization/Alkylations: Application in the Synthesis of (±)-Homolaudanosine
作者:Sivasankaran Dhanasekaran、Anirban Kayet、Arun Suneja、Vishnumaya Bisai、Vinod K. Singh
DOI:10.1021/acs.orglett.5b01197
日期:2015.6.5
variety of isoindolinones and tetrahydroisoquinolines via a Lewis acid catalyzed domino Mukaiyama–Mannich lactamization/alkylation is achieved. This transformation comprises a sequential formation of three new bonds through a one-pot, three-component procedure to afford product in moderate to high yields. A concise synthesis of (±)-homolaudanosine (2b) has been achieved using this method.
An efficient oxidative Mannich reaction between tertiary amines and unmodified methylketones has been developed, using copper salts as the catalyst and O(2) as the oxidant.
使用铜盐作为催化剂,O(2)作为氧化剂,已开发出叔胺与未改性甲基酮之间的有效氧化曼尼希反应。
Highly efficient heterogeneous aerobic oxidative C–C coupling from C<sub>sp3</sub>–H bonds by a magnetic nanoparticle-immobilized bipy–gold(<scp>iii</scp>) catalyst
作者:Weisen Yang、Li Wei、Tao Yan、Mingzhong Cai
DOI:10.1039/c6cy02567f
日期:——
cross-dehydrogenative coupling (CDC) of tertiary amines with nitroalkanes and various unmodified ketones was achieved by using a magnetic nanoparticle-immobilized bipy–gold(III) complex as catalyst and air as the soleoxidant to afford the corresponding C–Ccoupling products in good to excellent yields under mild reaction conditions. The new heterogeneous gold catalyst can easily be separated from the reaction mixture
Mechanochemical Oxidative Mannich Reaction: Evaluation of Chemical and Mechanical Parameters for the Mild and Chemoselective Coupling of<i>N</i>-<i>tert</i>-butoxycarbonyltetrahydroquinolines and Ketones
作者:Jing-Bo Yu、Gang Peng、Zhi-Jiang Jiang、Zi-Kun Hong、Wei-Ke Su
DOI:10.1002/ejoc.201600987
日期:2016.11
A mechanochemical oxidative Mannich reaction of N-tert-butoxycarbonyl (Boc) tetrahydroquinolines and ketones was successfully developed under solvent-free ball-milling conditions. The reaction afforded the desired coupling products in satisfactory yields under mild and tractable oxidative conditions. Side reactions such as deprotection of the Boc group were prevented by carefully adjusting the milling