Process for producing chromans

Details Process for producing chromans Process for producing chromans

C - Chemistry, Metallurgy

07

D

C07D 311/58 (2006.01) C07C 41/06 (2006.01) C07C 43/164 (2006.01) C07C 43/178 (2006.01) C07C 43/23 (2006.01) C07C 69/017 (2006.01) C07C 69/035 (2006.01) C07C 69/773 (2006.01) C07D 311/72 (2006.01) C07D 407/00 (2006.01) C07D 409/00 (2006.01)

Patent

CA 2243363

The present invention is directed to a process for producing chromans, comprising reacting a phenol, a formaldehyde and an alcohol in the presence of a secondary amine and an acid, to generate an alkoxymethylphenol compound with the ortho position to the phenolic hydroxyl group being substituted with an alkoxymethyl group, and reacting the alkoxymethylphenol compound with an unsaturated compound having a carbon-carbon double bond. Among the alkoxymethylphenol compounds generated as the intermediate products during the aforementioned reaction, specific ones are novel compounds of the formula: (see formula I) wherein R5 represents an alkoxyl group; R6 represents an aliphatic acyl group, an aromatic acyl group, benzyl group or a hydrogen atom; R7 and R8 each independently represent a hydrogen atom or a methyl group.

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