Concise and Stereoselective Synthesis of Enamides and Dienamides by a Titanium-Mediated Coupling Method
摘要:
Ynamide-titanium alkoxide complexes underwent hydrolysis or addition to aldehydes and ketones to give single, stereodefined di- or trisubstituted enamides in good yields. Alternatively, coupling of a variety of alkyne-titanium alkoxide complexes with terminal ynamides generated amino-substituted titanacyclopentadienes, hydrolysis or aldehyde addition of which afforded stereodefined dienamides.
Concise and Stereoselective Synthesis of Enamides and Dienamides by a Titanium-Mediated Coupling Method
作者:Ryoichi Tanaka、Shuji Hirano、Hirokazu Urabe、Fumie Sato
DOI:10.1021/ol027209x
日期:2003.1.1
Ynamide-titanium alkoxide complexes underwent hydrolysis or addition to aldehydes and ketones to give single, stereodefined di- or trisubstituted enamides in good yields. Alternatively, coupling of a variety of alkyne-titanium alkoxide complexes with terminal ynamides generated amino-substituted titanacyclopentadienes, hydrolysis or aldehyde addition of which afforded stereodefined dienamides.