Tetrahedron Letters p. 6025 - 6026 (1987)
Update date:2022-08-30
Topics:
Chen, Wha
Cava, Michael P.
Bromination of pyrrole by 1,3-dibromo-5,5-dimethylhydantoin, followed by direct reaction with BOC anhydride and DMAP, affords the stable N-BOC derivatives of 2-bromopyrrole and 2,5-dibromopyrrole.Lithium-halogen exchange of the latter with n-butyllithium generates the N-BOC derivatives of 2-lithiopyrrole, 2,5-dilithiopyrrole or 5-bromo-2-lithiopyrrole,which react with various electrophiles to give substituted N-BOC pyrroles in excellent yield.
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Doi:10.1007/BF01518645
(1934)Doi:10.1016/0039-6028(89)90882-0
(1989)Doi:10.1016/S0040-4039(00)96951-X
(1987)Doi:10.1055/s-1995-3981
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