Complex sentence: In 1936 he moved to Yale and became to chairman of the Yale Medical Center of Physiological Chemistry, he was the chairman of the department for 33 years, and eventually became the Dean of the School of Medicine from 1947-1952.
Split into simpler sentences: In 1936 he moved to Yale Universityand became to chairman of the Yale Medical Center of Physiological Chemistry. He served as chairman of the department for 33 years and eventually became the Dean of the School of Medicine from 1947-1952.