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|
| Type |
Poster Presentation |
| Area |
Organic Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
ORGN.P-404 |
| Subject |
Copper-Catalyzed Borylalkynylation of Internal Alkynes: Access to Tetrasubstituted Enynylboronates |
| Authors |
Jungtae Han, Jaesook Yun*
Department of Chemistry, Sungkyunkwan University, Korea
|
| Abstract |
A copper-catalyzed three-component coupling reaction of internal alkynes with silylated bromoalkynes and diboron has been developed to provide stereochemically well-defined tetrasubstituted enynylboronates. In the presence of NHC–copper precatalyst, various internal alkynes furnished fully-substituted borylenynes in good yield and with high levels of regio- and stereoselectivity. Symmetrical and non-symmetrical internal alkynes with aryl-, heteroaryl- and alkyl substituents were well-tolerated. The enynylboron products could be further utilized in transforming the C‒B bond into various C‒C bonds by coupling reactions. |
| E-mail |
jthan@skku.edu |
|
121st General Meeting of the KCS