N-bromobutanimide → 5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine

Participants

Reaction Steps

To 4-chloro-7H-pyrrolo[2,3-d]pyrimidine (0.21 g, 1.4 mmol) in dry methylene chloride (10 ml) was added N-bromosuccinimide (0.26 g, 1.5 mmol) at ambient temperature. The reaction mixture was stirred for 18 hours, and the resulting solid filtered with methylene chloride washes and dried in vacuo to afford 5-bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine as a tan powder (0.28 g, 88%). GC-MS: 233 (MH+), RT: 4.42 min.

Provenance & Evidence