Patent ID: 6891070

Claim:
Method for the preparation of the compound (I), which is therapeutically useful as a selective estrogen receptor modulator, wherein a) a compound of formula (II) R—O—CH 2 CH 2 —O—CH 2 CH 2 —R′ (II) where R is a protecting group and R′ is halogen, —OSO 2 CH 3 or tosylate, is reacted with 4-hydroxybenzophenone to give a compound of formula (III), b) the compound (III) is reacted with cinnamaldehyde and LiAlH 4 in a suitable solvent to give a compound of formula (IV) c) the compound (IV) is reacted with thionyl chloride in a suitable solvent to give a compound of formula (V) and d) the protecting group R is removed from the compound (V) to give the compound of formula (I).