Abstract Efficient syntheses of 4-, 5-and 6-benzoyl-7-azaindoles are described. Two strategies were developed: i) formation of 4-lithio and 5-lithio-7-azaindole and reaction with aldehydes and ii) organomagnesium addition to 6-cyano-7-azaindole. Both methods should allow the introduction of a diverse range of acyl substituents.
![1H-Pyrrolo[2,3-b]pyridine, 4-chloro-1-[tris(1-methylethyl)silyl]- Structure](https://image.chemsrc.com/caspic/247/651744-48-8.png)
![(4-chloro-1-triisopropylsilyl-pyrrolo[2,3-b]pyridin-5-yl)-phenyl- methanol Structure](https://image.chemsrc.com/caspic/269/942261-81-6.png)
![phenyl-(1-triisopropylsilylpyrrolo[2,3-b]pyridin-5-yl)methanol Structure](https://image.chemsrc.com/caspic/301/1067887-47-1.png)
