Tetrahedron Letters p. 8727 - 8730 (1997)
Update date:2022-08-11
Topics:
Yoshida, Yoshihiro
Hayashi, Ryosuke
Sumihara, Hiromasa
Tanabe, Yoo
TiCl4/Bu3N conducts highly efficient cross aldol additions between different ketones and between ketones and aldehydes, in good to excellent yields with high syn-stereoselectivities. As an extension, direct Claisen condensation between methyl esters was also promoted by TiCl4/Bu3N with 0.05 equiv of TMSOTf co-catalyst.
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