4,5-bis(dicyclohexylphosphino)-9,10VIP(LA)dihydro-9,9-dimethyl-8AH-xanthene (CAS# 940934-47-4) is typically coordinated to Cu(I) metal centers to form catalysts capable of internal borylative aminoboration of terminal alkenes, as well as being able to catalyze highly selective Markovnikov hydroboration.