Correspondence on "Beyond the Dimer and Trimer: Tetraspiro[2.1.25.1.29.1.213.13]hexadecane-1,3,5,7-tetraone - the Cyclic Tetramer of Carbonylcyclopropane".

ABSTRACT

The International Union of Pure and Applied Chemistry (IUPAC) name given in the title is incorrect. The correct IUPAC name for this molecule is tetraspiro[2.1.25.1.29.1.213.13]hexadecane-4,8,12,16-tetraone. The incorrect name given in the title, unfortunately, makes the carbon atom hexavalent at two different (3 and 5) positions. In addition, the two other keto groups (at positions 1 and 7) would appear on two of the cyclopropane rings if one adopts to the incorrect name. Nevertheless, this wrong name is a good example to discuss the importance of IUPAC nomenclature in the classroom with students.