In control: The first dynamic one‐pot three‐component asymmetrictransformation between aldehydes, protected α‐cyanoglycine esters, and enals catalyzed by a combination of a simple hydrogen‐bond‐donating catalyst and a chiral aminecatalyst is disclosed. Polysubstituted proline derivatives, which have a quaternary α stereocenter, were synthesized with high endo‐, diastereo‐, and enantioselectivities
作者:Luca Deiana、Yan Jiang、Carlos Palo-Nieto、Samson Afewerki、Celia A. Incerti-Pradillos、Oscar Verho、Cheuk-Wai Tai、Eric V. Johnston、Armando Córdova
DOI:10.1002/anie.201310216
日期:2014.3.24
Herein is described a versatile and broad synergistic strategy for expansion of chemical space and the synthesis of valuable molecules (e.g. carbocycles and heterocycles), with up to three quaternary stereocenters, in a highly enantioselective fashion from simple alcohols (31 examples, 95:5 to >99.5:0.5 e.r.) using integrated heterogeneousmetal/chiralaminemultiplerelaycatalysis and air/O2 as the terminal
本文描述了一种通用的,广泛的协同策略,用于扩展化学空间和合成有价值的分子(例如碳环和杂环),并具有多达三个四级立体中心,以对映体的方式从简单的醇类中高度选择性(31例,95:5至> 99.5:0.5 er),使用集成的多相金属/手性胺多重中继催化,并将air / O 2用作末端氧化剂。一种新型的高度1,4-选择性多相金属/胺共催化的烯醛加氢反应也被添加到中继催化序列中。
Selective C-tert-Butoxycarbonylation Using Di-tert-butyl Dicarbonate for the Synthesis of Multifunctional Carbon Compounds
作者:Piétrick Hudhomme
DOI:10.1055/s-0029-1219826
日期:2010.6
The reaction of di-tert-butyl dicarbonate (Boc2O) in the presence of the acylation catalyst 4-dimethylaminopyridine (DMAP) was examined with N-Boc or N-acyl cyanoglycinate. The couple Boc2O/DMAP was found to act as an efficient agent for selective C-tert-butoxycarbonylation affording multifunctional carbon compounds.
Biaryl heterocyclic compounds and methods of making and using the same
申请人:Zhou Jiacheng
公开号:US20050203147A1
公开(公告)日:2005-09-15
The present invention relates generally to the field of anti-infective, anti-proliferative, anti-inflammatory, and prokinetic agents. More particularly, the invention relates to a family of compounds having both a biaryl moiety and at least one heterocylic moiety that are useful as such agents.