在这篇文章中,我们描述了一种使用二苯基二碲化物作为简单且容易获得的有机催化剂的氨基磷酸酯的选择性合成。为了优化反应条件,进行了全因子设计,证明温度是 P(O)-N 键形成的关键因素。产品在温和条件下以中等至优异的产率获得。此外,使用31 P 和125 Te NMR 光谱对中间体进行了表征,证实了反应机理。
Catalytic Enantio- and Diastereoselective Alkylations with Cyclic Sulfamidates
作者:Thomas A. Moss、Beatriz Alonso、David R. Fenwick、Darren J. Dixon
DOI:10.1002/anie.200905329
日期:2010.1.12
Open for business: The enantio‐ and diastereoselective nucleophilic ring opening of five‐membered and six‐membered cyclicsulfamidates under asymmetric phase‐transfer catalysis is presented. A range of pro‐nucleophiles have been successfully alkylated in good yields and in good to excellent enantioselectivites.
Catalytic Asymmetric Alkylation Reactions for the Construction of Protected Ethylene-Amino and Propylene-Amino Motifs Attached to Quaternary Stereocentres
作者:Thomas A. Moss、David M. Barber、Andrew F. Kyle、Darren J. Dixon
DOI:10.1002/chem.201203825
日期:2013.2.25
An efficient catalytic and stereoselective method for the direct construction of protected ethylene‐amino and propylene‐amino scaffolds attached to quaternary stereocentres is reported. Preliminary investigations revealed a mild base catalysed nucleophilic ring opening of N‐sulfonyl aziridines using the commercially available phosphazene base 2‐tert‐butylimino‐2‐diethylamino‐1,3‐dimethyl‐perhydro‐1
[EN] PHOSPHORAMIDATE FLAME RETARDANTS<br/>[FR] IGNIFUGEANT À BASE DE PHOSPHORAMIDATE
申请人:EMPA
公开号:WO2009153034A1
公开(公告)日:2009-12-23
Disclosed are a group of phosphoramidate compounds, all of which have flame retardant properties, particularly on cellulosic fibers. Some of these compounds form oligomers, which are also useful as flame retardant substances.