Microwave-Promoted Pd-Catalyzed Cyanation of Aryl Triflates: A Fast and Versatile Access to 3-Cyano-3-desoxy-10-ketomorphinans
摘要:
[GRAPHICS]A methodology for the microwave-promoted conversion of triflates to the corresponding nitriles by using 8% equiv of Pd(Ph3P)(4) as the catalyst and 2.0 equiv of Zn(CN)(2) as the cyanide source has been developed. This method is highly efficient for the preparation of 3-cyano-3-desoxy10-ketomorphinans. The reaction was generally completed in 15 min at 200 degreesC and produced products in greater than 86% yields.