Asymmetric Hydrophosphonylation of Aldehydes using a Cinchona–Diaminomethylenemalononitrile Organocatalyst

For the asymmetric hydrophosphonylation of aldehydes, an efficient organocatalytic approach with a diaminomethylenemalononitrile‐based hydrogen‐bonding donor catalyst is presented. The catalyst induces high yields and excellent enantioselectivities (up to 98% yield, 96% ee).