One-pot synthesis of substituted styrenes from vicinal dibromoalkanes and arylboronic acids
作者:A. A. Tikhonov、A. A. Vasil’ev、M. V. Chirskaya、M. I. Struchkova、N. L. Merkulova、S. G. Zlotin
DOI:10.1007/s11172-007-0020-5
日期:2007.1
Dehydrobromination of vicinal dibromoalkanes in systems comprising 1,2-dimethoxy-ethane, N-butyl-N′-methylimidazolium tetrafluoroborate (or tetrabutylammonium bromide), and a base with subsequent palladium-catalyzed cross-coupling of the thus formed bromoalkenes with arylboronic acids furnished substituted styrenes.
Hydroalumination of terminal β-acetylene alcohols with lithium aluminum hydride
作者:O. A. Garibyan、G. M. Makaryan、M. R. Ogannisyan、Zh. A. Chobanyan
DOI:10.1134/s1070363216020109
日期:2016.2
Hydrogenation of terminal β-acetylene alcohols with lithium aluminum hydride in THF has afforded homoallylic alcohols. Decomposition of the intermediate organoaluminum complex with deuterated water, iodine, or pyridinium dibromide has evidenced about the non-regioselective hydride attack at the triple bond.
1,4-Hydroiodination of Dienyl Alcohols with TMSI To Form Homoallylic Alcohols Containing a Multisubstituted <i>Z</i>-Alkene and Application to Prins Cyclization
作者:Yongjin Xu、Zhiping Yin、Xinglong Lin、Zubao Gan、Yanyang He、Lu Gao、Zhenlei Song
DOI:10.1021/acs.orglett.5b00485
日期:2015.4.17
A regioselective 1,4-hydroiodination of dienyl alcohols has been developed using trimethylsilyl iodide as Lewis acid and iodide source. A range of homoallylic alcohols containing a multisubstituted Z-alkene was synthesized with good to excellent configurational control. The approach was applied in sequential hydroiodination/Prins cyclization to afford multisubstituted tetrahydropyrans diastereoselectively.
TROST, B. M.;COPPOLA, B. P., J. AMER. CHEM. SOC., 1982, 104, N 24, 6879-6881