Sulphonamidosalicylaldehydes

Details Sulphonamidosalicylaldehydes Sulphonamidosalicylaldehydes

1976-06-23

1978-03-21

Wyman, Daniel E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260556A, 260556AR, 544215, C07C14375, C07C14377, C07C14379

Patent

active

040803791

ABSTRACT:
4-Sulphonamidosalicylaldehydes of the formula ##STR1## wherein R represents an optionally substituted straight-chain or branched alkyl or cycloalkyl group or an optionally substituted aryl group, are valuable intermediates for the preparation of optical brighteners.

REFERENCES:
patent: 1876955 (1932-09-01), Kalischer et al.
patent: 3271412 (1966-09-01), Raue et al.
patent: 3317603 (1967-05-01), Blance et al.
patent: 3660487 (1972-05-01), Larsen et al.
Larsen et al., CA 71:30232k, (1969).

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