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US 2003/0083508 A1Published application
Method for the preparation of citalopram
AssigneeH. Lundbeck A/S
InventorsHans Petersen, Michael Harold Rock
Life of this patent
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Abstract
A method for the preparation of citalopram wherein the aldehyde of formula 1 is converted to the corresponding 5-cyano compound of formula (I) 2 which is alkylated to form citalopram, which is isolated in the form of the base or an acid addition salt thereof.
Claims5
A method for the preparation of citalopram, comprising the steps of
- converting the aldehyde of formula (II)
- 16
- to the 5-cyano compound of formula (I)
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- alkylating the compound of formula (I) to form citalopram, and
- isolating citalopram in the form of the base or an acid addition salt thereof.
3 more elements
A compound having the formula (II)
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- or an acid addition salt thereof.
Dependencies are inferred from the claim text.