Preparation of 3-fluorosalicylaldehyde

Details Preparation of 3-fluorosalicylaldehyde Preparation of 3-fluorosalicylaldehyde

1977-08-03

1978-11-07

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

568775, 568627, 568656, C07C 4500

Patent

active

041246438

ABSTRACT:
3-Fluorosalicylaldehyde may be prepared in a more economical manner by alkylating o-fluorophenol with an allyl halide such as allyl chloride, thereafter rearranging the resultant o-fluorophenyl allyl ether to form allyl-o-fluorophenol. The latter compound is then isomerized to form propenyl-o-fluorophenol. Thereafter this compound is subjected to ozonolysis at a subambient temperature to form the desired compound, namely, 3-fluorosalicylaldehyde.

REFERENCES:
patent: 3799940 (1974-03-01), Mains
patent: 3972945 (1976-08-01), Albright
Baldwin et al., Org. Reactions, vol. 22 (1975) pp. 10 and 11.

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