A highly enantioselective approach towards 2-substituted 3-bromopyrrolidines
作者:Jie Chen、Ling Zhou、Ying-Yeung Yeung
DOI:10.1039/c2ob25327e
日期:——
A facile and highly enantioselective approach towards 2-substituted 3-bromopyrrolidines has been developed. The process involves an amino-thiocarbamate catalyzed bromoaminocyclization of 1,2-disubstituted olefinic amides. The pyrrolidine products could readily be converted into other useful building blocks including a dihydropyrrole and a 2-substituted pyrrolidine.
A catalytic enantioselective bromocyclization of olefinic amides using amino-thiocarbamates as the catalysts has been developed. The resulting enantioenriched 2-substituted 3-bromopiperidines can readily be transformed to 3-substituted piperidines through a silver salt-mediated rearrangement. This process has been applied to the synthesis of a dopaminergic drug, Preclamol.
Olefination of Aromatic Carbonyls via Site‐Specific Activation of Cycloalkanone Ketals**
作者:Tuong Anh To、Thanh Vinh Nguyen
DOI:10.1002/anie.202317003
日期:2024.1.2
A simple substrate design allows site-specific activation of cyclic ketones for olefination reaction of aromatic carbonyl compounds.
简单的底物设计允许环酮的位点特异性活化,用于芳香族羰基化合物的烯化反应。
Exploring the NCS-382 Scaffold for CaMKIIα Modulation: Synthesis, Biochemical Pharmacology, and Biophysical Characterization of Ph-HTBA as a Novel High-Affinity Brain-Penetrant Stabilizer of the CaMKIIα Hub Domain
Aminothiocarbamate-Catalyzed Asymmetric Bromolactonization of 1,2-Disubstituted Olefinic Acids
作者:Chong Kiat Tan、Ling Zhou、Ying-Yeung Yeung
DOI:10.1021/ol200840e
日期:2011.5.20
An efficient and enantioselectivebromolactonization of 1,2-disubstituted olefinicacids using an amino-thiocarbamate catalyst has been developed, resulting in the formation of δ-lactones containing two chiral centers with up to 99% yield, 95% ee.