Process for producing chroman
AssigneeKuraray Co., Ltd.
InventorsEriko Fukumoto, Masahiro Torihara, Yoshin Tamai
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Abstract
A phenol, a formaldehyde and an unsaturated compound having carbon-carbon double bond are reacted in the presence of a secondary amine and an acid at a temperature of 100.degree. to 250.degree. C., to give a chroman.
Claims8
A process for producing chromans which comprises reacting a phenol, a formaldehyde and an unsaturated compound having carbon-carbon double bond in the presence of a secondary amine and an acid, wherein said phenol is a compound having at least one phenolic hydroxyl group, at least one ortho position which is not substituted, and said unsaturated compound is a compound having a carbon-carbon double bond that is not conjugated with another carbon-carbon double bond except in an aromatic moiety.
Dependencies are inferred from the claim text.