5-(2-Chloroethyl)-2,3-dihydrobenzofuran

It is generally condensed with 3-(S)-(+)-(1-carbamoyl-1,1-diphenylmethyl)pyrrolidine (or its derivatives) via nucleophilic substitution, typically in the presence of a base, to form the active API. 5-(2-Chloroethyl)-2,3-dihydrobenzofuran acts as a key intermediate in the synthesis of Darifenacin by providing the 2-(2,3-dihydrobenzofuran-5-yl)ethyl moiety.

API Name Darifenacin
CAS No 943034-50-2
Molecular Formula C10H11ClO
Molecular Weight 182.64 g/mol
Synonyms 5-(2-chloroethyl)-2,3-dihydro-1-benzofuran

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