(11Bs)-4-hydroxy-2,6-di(naphthalen-1-yl)-8,9,10,11,12,13,14,15-octahydrodinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide is a chiral phosphoric acid catalyst for a variety of enantioselective transformations, especially for carbon-carbon and carbon-heteroatom bond-forming reactions.