Reactive Dienes: Intramolecular Aromatic Oxidation of 3-(2-Hydroxyphenyl)-propionic Acids
摘要:
Treatment of 3-(2-hydroxyphenyl)-propionic acids with a hypervalent iodine reagent in the presence of a dienophile initiates a tandem intramolecular aromatic oxidation/Diels-Alder reaction. Herein we report (1) investigations on the scope and limitations of this novel reaction combination and (2) preliminary diastereoselectivity studies using alpha- and beta-substituted acids.
[EN] HYDROQUINONE DERIVATIVE SKIN BRIGHTENING COMPOUNDS<br/>[FR] COMPOSÉS DÉRIVÉS D'HYDROQUINONE POUR L'ÉCLAIRCISSEMENT DE LA PEAU
申请人:EASTMAN CHEM CO
公开号:WO2008143777A1
公开(公告)日:2008-11-27
[EN] Skin brightening compositions based on hydroquinone derivatives and methods of making and using the composition. The hydroquinone derivatives are 2-thio-hydroquinone derivatives. [FR] L'invention porte sur des compositions d'éclaircissement de la peau à base de dérivés d'hydroquinone, et sur des procédés de fabrication et d'utilisation de la composition. Les dérivés d'hydroquinone sont des dérivés de 2-thio-hydroquinone.