1431665-71-2Relevant academic research and scientific papers
Synthetic transformation of homopropargylic selenides to conjugated diene-substituted alcohols and amines using diisopropoxy(η2- alkyne)titanium intermediates
Shintaku, Kazuki,Nishino, Yoko,Maeda, Hajime,Segi, Masahito
, p. 4311 - 4324 (2013/06/26)
The reaction of homopropargylic selenides with the low-valent titanium reagent, derived from Ti(O-i-Pr)4 and 2 equiv of i-PrMgCl, proceeded via titanium-alkyne complexes, followed by the reaction with electrophiles, such as aldehydes and imines to afford allylic alcohols and amines having a phenylseleno group in moderate to high yields with excellent regioselectivity (up to >99:1). Especially, the reaction of the silyl-substituted alkynes with imines provided the desired products in almost complete regioselectivity. The resulting products were subjected to oxidation with H2O2 to lead conjugated diene-substituted alcohols and amines via selenoxide elimination in high yields. In addition, the isomer ratio of products was nearly completely maintained under the oxidative deselenation conditions.
