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Lithiation with Li 2,2,6,6-tetramethylpiperidide (LTMP) at -75o occurs at the 2-position. The yield of 2-bromo-6-fluorobenzoic acid obtained after carboxylation can be increased to 93% by the use of a base consisting of a 9:1 mixture of LTMP and LDA: Tetrahedron Lett., 37, 6551 (1996)./n
Hazard Statements: H226-H302-H315-H319
Flammable liquid and vapour. Harmful if swallowed. Causes skin irritation. Causes serious eye irritation.
Precautionary Statements: P280h-P305+P351+P338
Wear protective gloves/clothing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.