Tetrahedron Letters p. 4727 - 4730 (1989)
Update date:2022-07-29
Topics:
Barr, Darrin A.
Grigg, Ronald
Sridharan, Visuvanathar
Ti(i-PrO)3Cl or Ti(i-PrO)2Cl2 in combination with triethylamine effect regio- and stereo-specific cycloaddition of imines of α-amino methyl esters to methyl acrylate at room temperature with reversal of the normal regiochemistry.Transesterification of the imine ester group competes with cycloaddition leading to a mixture of pyrrolidines bearing C(2) methyl and isopropyl ester substituens.
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(1984)
