(R)-(-)-1,1'-Binaphthalene-2,2'-diyl Hydrogen Phosphate

(R)-(-)-1,1-Binaphthyl-2,2-diyl Hydrogenphosphate

This chiral atropisomeric cyclic phosphoric acid forms well crystallizing salts with a wide variety of organic bases.
Difficultly resolvable amines are often readily resolved using this acid.
Problems concerning the decomposition of the amine BNPA salt;

Chemical information and descriptions have been provided by Spectrum Chemicals.