Patent ID: 7687659

Claim:
A process of separating a compound of Formula I and/or a salt of the compound of Formula I, wherein R is an alkyl or —C(O)alkyl-, from a first mixture, the first mixture comprising: either the compound of Formula I; a compound of Formula II, and probucol; or a salt of the compound of Formula I; a salt of the compound of Formula II; and probucol; the process comprising: (a) partially neutralizing the first mixture thus affording a partially neutralized second mixture, the partially neutralized second mixture comprising: an aqueous phase; an organic phase; the compound of Formula I; a salt of the compound of Formula I; the compound of Formula II and/or a salt of the compound of Formula II; and probucol; (b) removing from the partially neutralized second mixture the aqueous phase comprising: the compound of Formula II and/or a salt of the compound of Formula II, thus leaving the organic phase comprising: the compound of Formula I and/or a salt of the compound of Formula I; and probucol; (c) isolating the compound of Formula I and/or a salt of the compound of Formula I.