Process of preparing aromatic aldehydes by reacting selected aro

Details Process of preparing aromatic aldehydes by reacting selected aro Process of preparing aromatic aldehydes by reacting selected aro

1981-04-23

1983-07-19

Waltz, Thomas A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260465D, 544159, 548262, 548363, 548455, 548496, 549 59, 549 76, 564153, 564155, 564157, 564158, 567211, 567212, 567217, 567218, 564220, 564221, 564222, 564223, 564414, 564305, 568435, 548561, C09B 1114, C07C10324

Patent

active

043943144

ABSTRACT:
A process of reacting a ring carbon atom of an aromatic compound Ar with a compound of the formula H.sub.2 NCH.dbd.NH.sub.2.sup.+ CH.sub.3 CO.sub.2.sup.-, and an anhydride which has the ##STR1## at from 10.degree. to 200.degree. C. and preferably 25.degree. to 40.degree. C. to form a compound of the formula ##STR2## where m is 1, 2 or 3, and A is H or F. In the case where m is 1 the compound ##STR3## can be hydrolyzed to ArCHO. Additionally, Fischers base can be reacted with formamidine acetate to form ##STR4##

REFERENCES:
R. Kahn and H. A. Staab, Ber. 87 272 (1954).
F. B. Dains, Ber. 35 2504 (1902).
J. B. Shoesmith and J. Haldane, J. Chem. Soc. 2704 (1923).

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