Dimerization of aldehydes by N-heterocyclic imine-based catalyst.

S. no.	Catalyst	RCHO [% yield]
1	Cp*2Th(ImDippN)(Me) (13)	Ph-[60], 4-NO2Ph-[95], 1-naphthyl-[77], 2-naphthyl-[45], 2-pyridyl-[83], 2-furyl-[43], 2-thiophen-[22], cyclohexyl-[100], cyclopentyl-[100], iso-propyl-[100]
2	[(ImDippN)Th{N(SiMe3)2}3] (19)	Ph-[60], 1-naphthyl-[77], 2-naphthyl-[45], 4-NO2Ph-[95], cyclohexyl-[100], cyclopentyl-[100], isopropyl-[100], o-Ph(CHO)2-[100]