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Intermolecular hydroaminoalkylation of alkenes and dienes using a titanium mono(formamidinate) catalyst†
Jaika Dörfler,Till Preuß,Christian Brahms,Dennis Scheuer,Sven Doye
Dalton Transactions Pub Date : 02/13/2015 00:00:00 , DOI:10.1039/C4DT03916E
Abstract

An easily accessible formamidinate ligand-bearing titanium complex initially synthesized by Eisen et al. is used as catalyst for intermolecular hydroaminoalkylation reactions of unactivated, sterically demanding 1,1- and 1,2-disubstituted alkenes and styrenes with secondary amines. The corresponding reactions, which have never been achieved with titanium catalysts before, take place with excellent regioselectivity (up to 99 : 1) and in addition, corresponding reactions of 1,3-butadienes with N-methylbenzylamine are also described for the first time.

Graphical abstract: Intermolecular hydroaminoalkylation of alkenes and dienes using a titanium mono(formamidinate) catalyst
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