Synthesis of a new urea derivative: a dual-functional organocatalyst for Knoevenagel condensation in water
摘要:
A phenylalanine-urea compound-catalyzed Knoevenagel condensation in water is reported. Various aldehydes and active methylene compounds undergo condensation at room temperature to give the desired products in high yields. The mechanism of the condensation of aldehydes with Meldrum's acid catalyzed by the novel urea derivative is also disclosed. (C) 2013 Elsevier Ltd. All rights reserved.
ALPHA-AMINO ACID DERIVATIVES FOR IMPROVING SOLUBILITY
申请人:Rudolph Thomas
公开号:US20110039924A1
公开(公告)日:2011-02-17
The invention relates to the use of α-amino acid derivatives for improving the solubility of poorly soluble substances in water or aqueous solutions and to mixtures and preferred preparations.
这项发明涉及使用α-氨基酸衍生物来提高水或水溶液中难溶物质的溶解度,以及混合物和优选制剂。
USE OF FLAVONOIDS
申请人:Rudolph Thomas
公开号:US20090317342A1
公开(公告)日:2009-12-24
The present invention relates to the use of at least one flavonoid for odour improvement and/or odour stabilisation, and to corresponding compositions and the preparation thereof.
本发明涉及至少一种黄酮类化合物用于改善气味和/或稳定气味,以及相应的组合物及其制备方法。
PREPARATION COMPRISING CHROMAN-2-ONE DERIVATIVES
申请人:Mujica-Fernaud Teresa
公开号:US20100291009A1
公开(公告)日:2010-11-18
The invention relates to preparations comprising at least one compound of the formula (I), where the substituents R
1
to R
4
have a meaning indicated in claim
1
, and salts and solvates thereof, and to the use thereof and selected compounds of the formula (I).
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.
USE OF DICYCLOHEXYLMETHANOL DERIVATIVES HAVING ANTIMICROBIAL PROPERTIES
申请人:MERCK PATENT GmbH
公开号:US20150118172A1
公开(公告)日:2015-04-30
The present invention relates to the use of at least one dicyclohexylmethanol derivative of the formula (I) as antimicrobial active compound or as anti-acne, antidandruff, deodorant or antiperspirant active compound, to preparations comprising these compounds, and to specific dicyclohexylmethanol derivatives and to a process for the preparation thereof.