Title of article :
Synthesis of novel 4-(1-ethoxycarbonyl-methylidene)-azetidin-2-ones via a Lewis acid-catalyzed reaction of ethyl diazoacetate
Author/Authors :
Cainelli، نويسنده , , Gianfranco and Galletti، نويسنده , , Paola and Gazzano، نويسنده , , Massimo and Giacomini، نويسنده , , Daria and Quintavalla، نويسنده , , Arianna، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2002
Abstract :
Treatment of (3R,4R,1′R)-3-[1-(t-butyldimethylsilyloxy)ethyl]-4-acetoxy-azetidin-2-one with ethyl diazoacetate in the presence of a Lewis acid such as TiCl4, TiF4, AlCl3 or SnCl4 affords the novel (3S,1′R)-3-[1-(t-butyldimethylsilyloxy)ethyl]-4(1-ethoxycarbonyl-methylidene)-azetidin-2-one as an E and/or Z isomer.
Keywords :
beta-lactams , Diazocompounds , Azetidinone , Ethyldiazoacetate , Lewis acids
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
