42604-30-8Relevant academic research and scientific papers
A singlet oxygen approach to oxaspirocycles
Jones, Kevin M.,Hillringhaus, Tim,Klussmann, Martin
supporting information, p. 3294 - 3297 (2013/06/27)
A method for the preparation of oxygen containing spirocycles using singlet oxygen is reported. A series of phenols were converted into the corresponding peroxy-cyclohexadienone derivatives by irradiation with visible light in the presence of a sensitizer and oxygen. The resulting peroxides could be converted into ether and lactone spirocycles in one or two steps. The synthesis of the oxaspirocycles from the phenols can also be performed in a one-pot fashion, avoiding the isolation of the peroxide intermediates.
Utilization of derivatives of 2,5-dihydroxyphenyl-carboxylic acids, their homologs, and their salts in preparation of a cosmetic or dermatological composition with a depigmenting action
-
, (2008/06/13)
A cosmetic or dermatological composition with a depigmenting action comprises derivatives of 2,5-dihydroxyphenylcarboxylic acids, their homologs, and their salts, with the derivatives having the following structural formula: STR1 wherein: R1 re
