Record number :
1082702
Title of article :
Lewis acid-catalyzed three-component condensation reactions of aldehydes, alkoxysilanes, and allenylsilanes: synthesis of α-propargyl ethers
Author/Authors :
Lui Niimi، نويسنده , , Shuichi Hiraoka، نويسنده , , Tsutomu Yokozawa، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2002
Pages :
8
From page :
245
To page :
252
Abstract :
Lewis acid-catalyzed reaction of acetals with allenylsilanes and the three-component reactions of aldehydes, alkoxysilanes, and allenylsilanes are described. Both reactions are strongly dependent on the substituent at the α-position of allenylsilanes. Allenylsilanes having bulky substituents such as the tert-butyl and isopropyl groups result in the corresponding α-propargyl ethers in high yields, whereas allenylsilanes having the methyl and ethyl groups afford not only the corresponding α-propargyl ethers in low yield but also cyclopropyl ketones and α,β-unsaturated ketones as by-products.
Keywords :
Lewis acid-catalyst , allenylsilane , ?-propargyl ether
Journal title :
Tetrahedron
Link To Document :