There are several reports on the synthesis of alkylamines,but most of the reported methods are not suitable for the synthesis of hindered amines.Inthis research, we found that acopper catalyst is effective for the formation of congested C À Nb onds at room temperature.C ontrol experiments revealed that acopper amide is akey intermediate.Moreover, when achiral amine was used, aquaternary carbon stereogenic center was created with good selectivity. Dr.N .T aniyama, Prof. Dr.Y .S unada Institute of IndustrialS cience, The Universityo fT okyo 4-6-1 Komaba Meguro-ku, Tokyo 153-8505 (Japan) Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.