Grimster, Neil P. published the artcileAlkynes to (E)-enolates using tandem catalysis: stereoselective anti-aldol and syn-[3,3]-rearrangement reactions, Computed Properties of 17877-23-5, the publication is Tetrahedron (2010), 66(33), 6429-6436, database is CAplus.
A new tandem catalysis strategy that transformed alkyne derivatives to (E)-enol-equivalent followed by either stereoselective anti-selective aldol coupling or syn-selective [3,3]-rearrangement transformations was reported. The mechanism was thought to proceed through an interchanging series of Lewis acid and Bronsted acid catalyzed reactions via the intermediacy of a ketiminum ion species. For example, the scandium(III) triflate-catalyzed reaction of alkyne I with Me2CHCHO and triphenylsilanol afforded adduct II in 73% yield and dr >95:5, while zinc triflate-catalyzed reaction of (E)-PhCH:CHCH2OH with I gave III in 88% yield and dr >95:5.
Tetrahedron published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Computed Properties of 17877-23-5.
Referemce:
https://en.wikipedia.org/wiki/Alcohol,
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