Palladium catalysed [4+2]-cycloaddition reactions of (2-Iodoaryl)allenes
β Scribed by Ronald Grigg; Long-He Xu
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 156 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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Absfrucf N-Substltuted lmldazolylzlnc chlorides were reacted wlth 2bromopyrldlne In the presence of Pd(PPh3)4 and a two-fold excess of ZnCl2 to afford cross-coupled products In 58-93% ylelds. Deprotection provlded convenient routes to 2-or 4(5)-(2-pyrtdlnyl)lmldazoles.