Ammonium Chloride‐Promoted Rapid Synthesis of Monosubstituted Ureas under Microwave Irradiation
作者:Chunling Blue Lan、Karine Auclair
DOI:10.1002/ejoc.202101059
日期:2021.10.7
Ammonium chloride promotes the selective formation of monosubstituted ureas undermicrowaveirradiation. Most nucleophiles, acid-labile functionalities, and protecting groups are well tolerated in this reaction. By avoiding transition metals and mineral acids, this methodology offers a more sustainable alternative for the synthesis of monosubstituted ureas and their analogs.
MONOSUBSTITUTED UREA DERIVATIVES AS A SELF-TANNING SUBSTANCE
申请人:MERCK PATENT GMBH
公开号:US20200038304A1
公开(公告)日:2020-02-06
The present invention relates to the use of monosubstiuted urea derivatives of the formula I as self-tanning substance, for increasing melanin synthesis, for improving melanin transport and/or improving the distribution of melanin in suprabasal layers, and to preparations comprising these urea derivatives.
Verfahren zum Herstellen eines Materials auf Basis von Cellulose mit einem verringerten Gehalt an Holzextraktstoff und/oder VOC
申请人:Fritz Egger GmbH & Co.
公开号:EP2138528A1
公开(公告)日:2009-12-30
Die Erfindung betrifft ein Verfahren zum Herstellen eines Materials auf Basis von Cellulose, insbesondere von Holz und/oder einem Holzwerkstoff, mit einem verringerten Gehalt an Holzextraktstoff und/oder VOC, in dem das Material auf Basis von Cellulose mit einem Oxidationskatalysator behandelt wird, um eine autokatalytische Oxidationsreaktion zu initiieren.
Monosubstituted urea derivatives as a self-tanning substance
申请人:MERCK PATENT GMBH
公开号:US11234914B2
公开(公告)日:2022-02-01
The present invention relates to the use of monosubstiuted urea derivatives of the formula I as self-tanning substance, for increasing melanin synthesis, for improving melanin transport and/or improving the distribution of melanin in suprabasal layers, and to preparations comprising these urea derivatives.
本发明涉及将式 I 的单取代脲衍生物用作自鞣物质,以增加黑色素的合成,改善黑色素的运输和/或改善黑色素在基底层上的分布,还涉及包含这些脲衍生物的制剂。
Lange; Ebert; Youse, Journal of the American Chemical Society, 1929, vol. 51, p. 1912