A former Sullivan & Cromwell partner who failed to pay millions of dollars in taxes to help pay for his partner’s rare books business in the West Village was ordered on Jan. 11 to serve two years and four months in prison.

John J. O’Brien, 48, who was escorted out of Sullivan & Cromwell’s offices on March 27, 2009, after a meeting with firm partners where Mr. O’Brien tried to blame millions of dollars in delinquencies on his tax preparer, was also ordered to pay $2.87 million in restitution by Southern District Magistrate Judge Henry B. Pitman (See Profile).