Supporting-Electrolyte-Free Anodic Oxidation of Oxamic Acids into Isocyanates: An Expedient Way to Access Ureas, Carbamates, and Thiocarbamates
作者:Alessia Petti、Corentin Fagnan、Carlo G. W. van Melis、Nour Tanbouza、Anthony D. Garcia、Andrea Mastrodonato、Matthew C. Leech、Iain C. A. Goodall、Adrian P. Dobbs、Thierry Ollevier、Kevin Lam
DOI:10.1021/acs.oprd.1c00112
日期:2021.12.17
report a new electrochemical supporting-electrolyte-free method for synthesizing ureas, carbamates, and thiocarbamates via the oxidation of oxamic acids. This simple, practical, and phosgene-free route includes the generation of an isocyanate intermediate in situ via anodic decarboxylation of an oxamic acid in the presence of an organic base, followed by the one-pot addition of suitable nucleophiles to afford
我们报告了一种新的电化学无负载电解质方法,用于通过草酸氧化合成尿素、氨基甲酸酯和硫代氨基甲酸酯。这种简单、实用且无光气的路线包括在有机碱存在下通过草酸的阳极脱羧原位生成异氰酸酯中间体,然后一锅加入合适的亲核试剂以提供相应的尿素,氨基甲酸酯和硫代氨基甲酸酯。此程序适用于不同的胺、醇和硫醇。此外,当使用单程连续电化学流动条件并且该反应在碳石墨 C gr /C gr 在流动池中,可以在 6 分钟的停留时间内以高产率获得尿素化合物,解锁在批量条件下无法访问的底物,同时易于扩展。
IMIDAZOLIDINONE DERIVATIVES
申请人:Dehmlow Henrietta
公开号:US20080242677A1
公开(公告)日:2008-10-02
The invention is concerned with novel imidazolidinone derivatives of formula (I):
wherein R
1
to R
11
and X are as defined in the description and in the claims, as well as physiologically acceptable salts thereof. These compounds bind to LXR alpha and LXR beta and can be used in pharmaceutical compositions.
Azetidine derivatives as CCR-3 receptor antagonists
申请人:Novartis AG
公开号:US07288537B2
公开(公告)日:2007-10-30
Compounds of formula I
in free or salt form, wherein Ar, X, Y, R1, R2, R3, R5, m, n, p and q have the meanings as indicated in the specification, are useful for treating conditions mediated by CCR3. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.
The invention is concerned with novel imidazolidinone derivatives of formula (I):
wherein R1 to R11 and X are as defined in the description and in the claims, as well as physiologically acceptable salts thereof. These compounds bind to LXR alpha and LXR beta and can be used in pharmaceutical compositions.
Pyranine, a multivalent anionic fluorescent dye, triggered the budding and production of small vesicles from giant vesicles that consisted of zwitterionic and cationic lipids. Calorimetric analysis and microscopic observations revealed that the binding of pyranine induced domain formations of the lipid bilayer followed by membrane fission.