| Autor: |
Tanveer Mahamadali Shaikh, Fung-E Hong |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 1578-1588 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
1860-5397 |
| DOI: |
10.3762/bjoc.9.180 |
| Popis: |
A series of general and selective Pd(II)-catalyzed Heck reactions were investigated under mild reaction conditions. The first protocol has been developed employing an imidazole-based secondary phosphine oxide (SPO) ligated palladium complex (6) as a precatalyst. The catalytic coupling of aryl halides and olefins led to the formation of the corresponding coupled products in excellent yields. A variety of substrates, both electron-rich and electron-poor olefins, were converted smoothly to the targeted products in high yields. Compared with the existing approaches employing SPO–Pd complexes in a Heck reaction, the current strategy features mild reaction conditions and broad substrate scope. Furthermore, we described the coupling of arylboronic acids with olefins, which were catalyzed by Pd(OAc)2 and employed N-bromosuccinimide as an additive under ambient conditions. The resulted biaryls have been obtained in moderate to good yields. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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