1. Suzuki‐Miyaura Cross‐Coupling of Amides using Well‐Defined, Air‐Stable [(PR3)2Pd(II)X2] Precatalysts.
- Author
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Ma, Siyue, Zhou, Tongliang, Li, Guangchen, and Szostak, Michal
- Subjects
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AMIDES , *SCISSION (Chemistry) , *COUPLING reactions (Chemistry) , *CHEMOSELECTIVITY , *KETONES - Abstract
A versatile method for the Suzuki‐Miyaura cross‐coupling of amides using highly active, well‐defined, and air‐stable Pd−phosphine precatalysts is reported. Most notably, the method represents the first example of using practical and operationally‐simple Pd(II)−phosphine precatalysts in the emerging amide bond cross‐coupling manifold. The reactions are efficient at 0.10 mol% loading, furnishing biaryl ketones with high chemoselectivity for N−C(O) bond cleavage. This versatile method enables for the first time to achieve Pd−phosphine‐catalyzed cross‐coupling of amides at ppm loading. This C−N cross‐coupling can be used to efficiently furnish pharmaceutical intermediates by orthogonal Pd‐catalyzed cross‐couplings. We fully expect that operationally‐simple [(PR3)2Pd(II)X2] precatalysts as effective triggers for N−C(O) cross‐coupling will be of broad synthetic and catalytic interest. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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