Journal of Organic Chemistry p. 157 - 164 (1981)
Update date:2022-08-02
Topics:
Hasan, Iltifat
Marinelli, Edmund R.
Lin, Li-Ching Chang
Fowler, Frank W.
Levy, Alan B.
N-(tert-Butoxycarbonyl)pyrrole and N-(tert-butoxycarbonyl)indole have been prepared and lithiated at the 2-position with lithium 2,2,6,6-tetramethylpiperidide and tert-butyllithium, respectively.These lithium reagents react with a variety of electrophiles to give the 2-substituted N-(tert-butoxycarbonyl)pyrroles and N-(tert-butoxycarbonyl)indoles.The N-(tert-butoxycarbonyl) substituent may be removed rapidly and in high yield from the pyrrole derivatives under basic conditions.For the indole derivatives, the protecting group may be removed with either acidic or basic conditions.
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