Novel rhodium-1,3-dialkyl-3,4,5,6-tetrahydropyrimidin-2-ylidene complexes as catalysts for arylation of aromatic aldehydes

Novel Complexes of rhodium(I) based on 1,3-dialkyl-3,4,5,6-tetrahydropyrimidin-2-ylidenes give good yields for the addition of phenylboronic acid to aldehydes.