Process for the manufacture of para-tert.butylbenzaldehyde and i

Details Process for the manufacture of para-tert.butylbenzaldehyde and i Process for the manufacture of para-tert.butylbenzaldehyde and i

1979-11-14

1981-07-07

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

568437, 570127, C07C 2502, C07C 4543

Patent

active

042774217

ABSTRACT:
p-tert.Butylbenzaldehyde and the derivatives thereof which are halogen-substituted at the nucleus are prepared by bromination of p-tert.butyltoluene and the derivatives thereof which are correspondingly halogen-substituted at the nucleus under side-chain halogenation conditions until the benzal bromide is obtained which is then saponified. Practically no undesired bromination at the nucleus or the tert.butyl group takes place.
The products obtained are valuable intermediates for the manufacture of pharmaceutical agents, plant protecting agents and dyestuffs.

REFERENCES:
patent: 3700736 (1972-10-01), Yamamoto et al.
patent: 4085147 (1978-04-01), Rosinger et al.
patent: 4108904 (1978-08-01), Brown et al.
Koike et al., Chem. Abst., vol. 87, #84685, (1977).
Morris et al., Organic Chemistry, 2nd ed., pp. 386-390 (1966).
Voronkor et al., Chem. Abst., vol. 78, #71582n (1973).
Pearson et al., Chem. Abst., vol. 86, #55196z (1977).
Foldesi, Chem. Abst., vol. 65, #8806c (1966).
Bevan, Chem. Abst., vol. 54, #14244b (1957).

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