(Poly)glycerol monoethers were synthesized in good yield and selectivity by the catalytic reductive alkylation of glycerol, diglycerol, and triglycerol with readily available, cheap and/or bio‐sourced carboxylic acids. The reaction was catalyzed by 1 mol % of Pd/C under 50 bar H2 using an acid ion‐exchange resin as a recyclable cocatalyst. The catalytic system was recycled several times, and a mechanism
(聚)甘油单醚是通过甘油,二甘油和三甘油与现成的廉价和/或生物来源的羧酸的催化还原烷基化反应而合成的,具有良好的收率和选择性。使用酸性离子交换树脂作为可循环助催化剂,在50 bar H 2下以1 mol%的Pd / C催化反应。催化系统被回收了几次,并提出了这种转化的机理。
WRINKLE AMELIORATING AGENT
申请人:Pola Chemical Industries Inc.
公开号:EP3545942A1
公开(公告)日:2019-10-02
The object is to provide a wrinkle improving agent having an excellent wrinkle improving effect. A compound expressed by the following Formulas (1) and/or (2) is used as an active ingredient of a wrinkle improving agent.
(In Formulas (1) and (2), R and R' independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R" represents an alkylene group having 1 to 3 carbon atoms, and n represents a number of 0 or 1.)
The object is to provide a wrinkle improving agent having an excellent wrinkle improving effect. A compound expressed by the following Formulas (1) and/or (2) is used as an active ingredient of a wrinkle improving agent.
(In Formulas (1) and (2), R and R′ independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R″ represents an alkylene group having 1 to 3 carbon atoms, and n represents a number of 0 or 1.)