Thermal process for preparing 3-phenoxybenzyl bromide

Details Thermal process for preparing 3-phenoxybenzyl bromide Thermal process for preparing 3-phenoxybenzyl bromide

C - Chemistry, Metallurgy

07

C

260/645.91

C07C 41/00 (2006.01) C07C 41/22 (2006.01) C07C 43/20 (2006.01) C07C 43/29 (2006.01)

Patent

CA 1093585

Case 4196 THERMAL PROCESS FOR PREPARING 3-PHENOXYBENZYL BROMIDE Abstract of the Disclosure Reaction of 3-phenoxytoluene with bromine at elevated temperature yields 3-phenoxybenzyl bromide, 3-phenoxybenzal bromide, or a mixture thereof. In contrast to teachings of the prior art, phosphorus halide catalysis or u.v. activation is not required to achieve a desirable amount of side-chain bromination with a minimum of nuclear halogenation. For example, it was observed that at 265? 5°C, good yields of the desired benzyl and benzal bromide were obtained, but no nuclear halogenated by- product was detected by gas chromatography.

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