28541-43-7Relevant articles and documents
Titanium-catalyzed iminohydrazination of alkynes
Banerjee, Sanjukta,Shi, Yanhui,Cao, Changsheng,Odom, Aaron L.
, p. 5066 - 5077 (2005)
Titanium pyrrolyl complexes Ti(NMe2)2(dap) 2 (1), where dap is 2-(N,N-dimethylaminomethyl)pyrrolyl, and Ti(NMe2)3(bap) (3), where bap is 2,5-bis(N,N- dimethylaminomethyl)pyrrolyl, were found to be eff
Bis(amidate)bis(amido) titanium complex: A regioselective intermolecular alkyne hydroamination catalyst
Yim, Jacky C.-H.,Bexrud, Jason A.,Ayinla, Rashidat O.,Leitch, David C.,Schafer, Laurel L.
, p. 2015 - 2028 (2014/04/03)
An efficient and selective bis(amidate)bis(amido) titanium precatalyst for the anti-Markovnikov hydroamination of alkynes is reported. Hydroamination of terminal and internal alkynes with primary alkylamines, arylamines, and hydrazines is promoted by 5-10 mol % of Ti catalyst. Various functional groups are tolerated including esters, protected alcohols, and imines. The in situ generated complex shows comparable catalytic activity, demonstrating its synthetic versatility for benchtop application. Applications of this catalyst for the synthesis of amino alcohols and a one-pot procedure for indole synthesis are described. A mechanistic proposal that invokes turnover-limiting protonolysis is presented to rationalize the observed regioselectivities.
Uncatalyzed Strecker-type reaction of N,N-dialkylhydrazones in pure water
Marques-Lopez, Eugenia,Herrera, Raquel P.,Fernandez, Rosario,Lassaletta, Jose M.
supporting information; experimental part, p. 3457 - 3460 (2009/04/08)
Aldehyde and ketone N,N-dialkylhydrazones behave as a stable class of imine surrogates exhibiting a unique reactivity in the Strecker reaction with in situ generated HCN, that proceeds in pure water in the absence of co-solvents, catalysts or promoters. E