Abstract:
<p align="justify"> Costin D. Nenitzescu was born in Bucharest in 1902 and passed away in Busteni, Romania in 1970. He obtained primary and secondary education in Romania and began university studies at the Swiss Federal Polytechnic Institute in Zurich. Later, he moved to the Technische Hochschule in Munchen (Munich) where he worked with Hans Fischer and obtained the Doctor of Engineering Degree in 1925. During the same year, he returned to Romania where he spent the rest of his life working, first at the University of Bucharest (1925-1935) and then at the Polytechnic Institute (1935-1970). Costin D. Nenitzescu is considered the founder of the School of Modern Organic Chemistry in Romania. He has published approximately 300 (three hundred) scientific articles, twenty books and treatises dealing mainly with organic chemistry, and authored about forty patents. Several organic reactions bear his name. Costin D. Nenitzescu s work includes the chemistry of indole and pyrrole, Romanian petroleum, nitro derivatives, reactions catalyzed by aluminum chloride, pyrytium salts, aromatic alkylation, cyclobutadiene, cyclooctatetraene, annulenes, carbonium ion reactions, eliminations, oxidations, and additions. </p>