Asymmetric synthesis of allyl- and alpha-allenylamines from chiral imines and alkynes via (eta(2)-imine)Ti(O-i-Pr)2 complexes |
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| Authors: | Fukuhara Kohki Okamoto Sentaro Sato Fumie |
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| Institution: | Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan. |
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| Abstract: | reaction: see text] The reaction of a divalent titanium reagent Ti(O-i-Pr)(4)/2i-PrMgX with optically active arylaldimines derived from arylaldehydes and O-methylphenylglycinol provided, in a highly diastereoselective manner, chiral (eta(2)-imine)Ti(O-i-Pr)(2) complexes, which in turn reacted with 1-alkynes or propargyl compounds to give optically active allyl- and alpha-allenylamines, respectively. |
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