Proline-Catalyzed Cyclization Reaction for the Synthesis of Naphthostyrils: Application to the Total Synthesis of Prioline
作者:Kyeong-Yong Park、Ha-Jeong Song、Jung-Nyoung Heo
DOI:10.1002/adsc.201500367
日期:2015.10.12
A new method for the synthesis of naphthostyrils is described. In this method, a sequential Stille coupling and proline-catalyzedcyclization procedure is employed for the reaction of 4-bromooxindoles and β-tributylstannyl-α,β-unsaturated ketones. The utility of this methodology is demonstrated in the first totalsynthesis of prioline from a simple 2-isopropylphenol.
Direct One-Pot Synthesis of Naphthoxindoles from 4-Bromooxindoles by Suzuki-Miyaura Coupling and Aldol Condensation Reactions
作者:Kyeong-Yong Park、Bum Tae Kim、Jung-Nyoung Heo
DOI:10.1002/ejoc.201301242
日期:2014.1
An efficient one-pot synthesis of naphthoxindoles by using 4-bromoindolin-2-ones and 2-formylphenylboronic acids has been developed. The coupling reaction proceeds in good to excellent yields under microwave irradiation through a Suzuki–Miyaura coupling and an aldolcondensation cascade reaction. In addition, this protocol permits the facile construction of naphthoxindoles through an expanded scope