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In ethanol; for 0.08333330000000001h;Heating / reflux;
610 mg, 2 mM, AGS 200 and 400 mg, 2 mM, N-methyl glucose amine in 30 ml ethanol were heated at reflux 5 minutes. The clear orange solution was evaporated, triturated with acetone-hexane and filtered to give 930 mg, 93% yield, orange-red solid.
EXAMPLE 3 In a similar manner as described in Example 2 reaction of 3-bromo-5-tert-butyl-4-hydroxybenzaldehyde and malononitrile gave 3-bromo-5-tert-butyl-4-hydroxybenzylidenemalononitrile as pale yellow needles from alcohol m.p. 185. 3-bromo-5-tert-butyl-4-hydroxybenzaldehyde was prepared as follows: