28638-79-1Relevant academic research and scientific papers
Recycling Catalyst as Reactant: A Sustainable Strategy to Improve Atom Efficiency of Organocatalytic Tandem Reactions
Wei, Wen,Tang, Yuhai,Zhou, Yan,Deng, Ge,Liu, Ziyu,Wu, Jun,Li, Yang,Zhang, Junjie,Xu, Silong
, p. 6559 - 6563 (2018)
A sustainable strategy by internally recycling an organocatalyst as a reactant in a downstream reaction to improve the atom efficiency of organocatalytic tandem reactions is described. Specifically, a one-pot tandem Cloke-Wilson/Boulton-Katritzky reaction
Organocatalytic Cloke-Wilson Rearrangement: DABCO-Catalyzed Ring Expansion of Cyclopropyl Ketones to 2,3-Dihydrofurans
Zhang, Jingfang,Tang, Yuhai,Wei, Wen,Wu, Yong,Li, Yang,Zhang, Junjie,Zheng, Yuansuo,Xu, Silong
, p. 3043 - 3046 (2017/06/23)
An organocatalytic Cloke-Wilson rearrangement of cyclopropyl ketones to 2,3-dihydrofurans is exploited utilizing the homoconjugate addition process. With 1,4-diazabicyclo[2.2.2]octane as the catalyst, the rearrangement in DMSO at 120 °C proceeded in gener
CYCLOALKYLATION BY THE α,ω-DIBROMIDES OF COMPOUNDS CONTAINING AN ACTIVATED METHYLENE GROUP AS A METHOD FOR THE SYNTHESIS OF 1,1-DISUBSTITUTED CYCLOALKENES
Zefirov, N. S.,Kuznetsova, T. S.,Kozhushkov, S. I.,Surmina, L. S.,Rashchupkina, Z. A.
, p. 474 - 480 (2007/10/02)
A convenient preparative method was developed for the cycloalkylation of active methylene compounds, including β-diketones, by the dibromides BrCH2(CH2)nCH2Br (n = 0,1,2) in the presence of an excess of potassium carbonate in DMSO.The reaction gives high yields for the dibromides with n = 0 and 2, whereas the formation of cyclobutanes (n=1) is complicated by O,C-alkylation.The 1-substituted 1-acylcyclopropanes undergo thermal isomerization to the corresponding dihydrofuranes.
