Stereoselective Access to Fully Substituted Aldehyde‐Derived Silyl Enol Ethers by Iridium‐Catalyzed Alkene Isomerization
作者:Itai Massad、Heiko Sommer、Ilan Marek
DOI:10.1002/anie.202005058
日期:2020.9
An in situ generated cationic Ir‐catalyst isomerizes simple allylic silylethers into valuable, fully substituted aldehyde‐derived silylenolethers. Importantly, by judicious choice of substrate, either of the two possible stereoisomers of a given enolate derivative is accessible with complete stereoselectivity. One‐pot isomerization‐aldol and isomerization‐allylation processes illustrate the synthetic
Highlyregioselectivehydrolysis of diacetate of (E)-2-substituted-2-butene-1,4-diol has been demonstrated. Lipase AL (Meito) was chosen from among commercial enzymes as the one most able to preferentially hydrolyze the acetyl group at 1-position giving monoacetate.
Fluorine-containing compounds and polymers derived therefrom
申请人:——
公开号:US20030109626A1
公开(公告)日:2003-06-12
Provided are fluorine-containing compounds, and polymers derived therefrom, for use in compositions used for treating textile substrates. Also provided are methods of making fluorine-containing compounds and polymers derived therefrom, compositions comprising the compounds and/or polymers of the present invention, methods of treating substrates, and the treated products derived therefrom.