Process for the Preparation of Gefitinib
AssigneeCipla Limited
InventorsDharmaraj Ramachandra Rao, Rajendra Narayanrao Kankan, Srinivas Laxminarayan Pathi
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Abstract
There is provided a compound of formula (III), and a process for preparing a compound of formula (V) comprising converting a compound of formula (III) to the compound (V), wherein (X) is fluoro, chloro, bromo or iodo. There is also provided a process for preparing a compound of formula (XI) comprising converting a compound of formula (X) to the compound (XI). The compounds (V) and (XI) so prepared may be used in a process for preparing gefitinib.
Claims28
A process for preparing a compound of formula V
- comprising converting a compound of formula III
- to the compound of formula V, wherein X is selected from fluoro, chloro, bromo or iodo, preferably chloro or bromo.
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A compound of formula III
- wherein X is selected from fluoro, chloro, bromo or iodo.
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Dependencies are inferred from the claim text.