Journal of Organic Chemistry p. 4542 - 4548 (1995)
Update date:2022-08-04
Topics:
Patterson, John W.
Mycophenolic acid (1) has been synthesized from 2,4-dihydroxybenzoic acid by regioselective introduction of the three required carbon substituents.A key transformation in this sequence is the introduction of the methyl substituent at position 5 by a rapid, uncatalyzed replacement of the bromide in 8 at low temperature by methyllithium.The scope and mechanism of this methylation reaction are examined.
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