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US 12,637,417 B2Granted
Method for producing 2-(halogenated methyl)naphthalene and 2-naphthyl acetonitrile
AssigneeUbe Corporation
InventorsShunsuke Tsuji, Masaki Nagahama, Hirotsugu Taniike
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Abstract
A method for producing a 2-(halogenated methyl)naphthalene represented by general formula (1): where X is a halogen atom. The method includes a halogenation process of reacting 2-methylnaphthalene with a halogenating agent under light irradiation, in an organic solvent selected from a halogenated hydrocarbon, an aliphatic ester and an aliphatic hydrocarbon.
Claims4
A method for producing a 2-(halogenated methyl) naphthalene of formula (1):
- wherein
- X is a halogen atom,
- the method comprising:
- flow synthesis reaction in an open system of 2-methylnaphthalene with a halogenating agent under light irradiation, in methyl acetate,
- wherein
- a temperature of the flow synthesis reaction is from −20° C. to 55° C., and
- the flow synthesis reaction does not comprise an additive.
4 more elements
A method for producing 2-naphthylacetonitrile, comprising:
- flow synthesis reaction in an open system of 2-methylnaphthalene with a halogenating agent under light irradiation, in methyl acetate to produce a 2-(halogenated methyl) naphthalene of formula (1):
- wherein X is a halogen atom;
- and
- cyanation of the 2-(halogenated methyl) naphthalene with a cyanating agent, in a solvent, wherein
- a temperature of the flow synthesis reaction is from −20° C. to 55° C., and
- the flow synthesis reaction does not comprise an additive.
3 more elements
Dependencies are inferred from the claim text.