Journal of the American Chemical Society p. 8100 - 8101 (2003)
Update date:2022-08-03
Topics:
Ong, Tiow-Gan
Yap, Glenn P. A.
Richeson, Darrin S.
Bis(guanidinate) titanium imido complexes [{(Me2N)C(NiPr)2}2TiNAr-] (Ar- = 2,6-Me2C6H3 (1a); C6F5 (1b)) are competent catalysts for the guanylation of a variety of arylamines with carbodiimide. The reversible [2 + 2] addition of iPrN=C=NiPr to 1b is demonstrated and is proposed to be part of the catalytic cycle. Compounds 1a and 1b are also effective precatalysts for the transamination of trialkylguanidines with arylamines to yield aryldialkylguanidines. Copyright
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