Process of preparing hydroxyarylaldehydes

Details Process of preparing hydroxyarylaldehydes Process of preparing hydroxyarylaldehydes

1985-03-20

1986-07-08

Helfin, Bernard

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

Organic compounds

Oxygen containing

568313, C07C 4545

Patent

active

045994579

ABSTRACT:
An improvement in the process for preparing hydroxyarylaldehydes is disclosed where a phenolic compound is reacted with formaldehyde, in the presence of a catalyst such as a titanium or zirconium containing catalyst, optionally in the presence of a catalyst promoter, wherein the improvement is the addition of a yield effective amount of a modifier having the formula: ##STR1## where R.sub.1 is selected from the group consisting of: an alkyl group having from 1 to 12 carbon atoms, a cycloalkyl group that can have 5 and 6 carbon atoms, and an H, and where R.sub.2 is selected from the group consisting of: an alkyl group having from 1 to 12 carbon atoms, and a cyclo alkyl group that can have 5 to 6 carbon atoms; and where R.sub.1 and R.sub.2 can together form a cyclic group that can have 5 and 6 carbon atoms.

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