86029-82-5Relevant academic research and scientific papers
Platinum-catalyzed cyclization/[1,2]-alkyl migration/allyl shift/cyclization cascade of epoxy alkynyl allyl ethers: A step-economical route to spirobenzo[h]chromanones
Yang, Yan-Fang,Shu, Xing-Zhong,Luo, Jian-Yi,Ali, Shaukat,Liang, Yong-Min
supporting information; scheme or table, p. 8600 - 8604 (2012/09/07)
In tandem: A PtI4-catalyzed tandem reaction of epoxy alkynyl allyl ethers involving a cyclization, [1,2]-alkyl migration, O→C allyl shift, aromatic cyclization sequence has been achieved to synthesize spirobenzo[h]chromanones. The reaction simultaneously forms two adjacent stereocenters, one of which is a quaternary carbon atom (see scheme). Copyright
15-[(Z)-Phenylmethylidene]-7,14-dioxadispiro[5.1.5.2]pentadecanes: Stereoselective one-pot assembly from cyclohexanones and phenylacetylene in a KOH/DMSO suspension
Schmidt, Elena Yu,Zorina, Nadezhda V.,Skitaltseva, Elena V.,Ushakov, Igor A.,Mikhaleva, Albina I.,Trofimov, Boris A.
supporting information; experimental part, p. 3772 - 3775 (2011/08/06)
Cyclohexanones react with phenylacetylene in a KOH/DMSO suspension (80°C, 1 h) to give unexpectedly phenylmethylidene dispirocyclic ketals, 15-[(Z)-phenylmethylidene]-7,14-dioxadispiro[5.1.5.2]pentadecanes, in 16-22% yields (along with the anticipated β,γ- and α,β-ethylenic ketones).
THE PREPARATION β-KETOALDEHYDES
Ager, David J.
, p. 419 - 422 (2007/10/02)
β-Ketoaldehydes(7) were prepared by the addition of bromophenylthiotrimethylsilylmethane(6) to trimethylsilyl enol ethers(3) followed by a sila-Pummerer rearrangement and hydrolysis.
