prochirality centre

https://doi.org/10.1351/goldbook.P04860
An atom of a molecule which becomes a
chirality centre
by replacing one of the two
stereoheterotopic
ligands
attached to it by a different ligand, e.g. C-1 of ethanol; C-3 of butan-2-ol.
Source:
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2214 [Terms] [Paper]