121st General Meeting of the KCS

Type Poster Presentation
Area Organic Chemistry
Room No. Event Hall
Time 4월 19일 (목요일) 11:00~12:30
Code ORGN.P-349
Subject Synthesis of 4-​hydroxybenzoic esters - Oxidation of substituted Hagemann's ester
Authors Dahye Kim, Sangho KOO1,*
Department of Energy Science and Technology, Myungji University, Korea
1Department of Chemistry, Myungji University, Korea
Abstract In an effort to synthesize carotenoids with improved biological activity, we need to develop a practical synthetic method of diversely R-substituted 4-hydroxybenzoic esters as the terminal ring structure. A practical two-step synthetic method of diversely R-substituted 4-hydroxybenzoic esters, which may have wide applications in household chemicals and polymeric materials, was developed by 2:1 coupling between ethyl acetoacetate and aldehydes (RCHO) in t-BuOK/t-BuOH, followed by oxidative aromatization of the resulting Hagemman’s esters by using stoichiometric NBS and catalytic TMS.OTf.
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