Formal [3 + 2] and [3 + 3] additions of acceptor-substituted cyclopropylmethylsilanes to allenylsilanes.
1,3-Dipolar synthons formed from vicinal TBDPS-substituted cyclopropyl alkyl/phenyl ketones on treatment with Lewis acids such as TiCl(4) and Et(2)AlCl reacted with allenylsilanes to furnish [3 + 2] and [3 + 3] adducts with high regio- and stereocontrol. [reaction: see text]
Yadav
Veejendra K
VK
Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India. vijendra@iitk.ac.in
Sriramurthy
Vardhineedi
V