Synthesis of ethyl 4-chloro-2-oxobut-3-ynoate and its addition to alkyl vinyl ethers
作者:A. B. Koldobskii、E. V. Solodova、I. A. Godovikov、V. N. Kalinin
DOI:10.1007/s11172-008-0203-8
日期:2008.7
Ethyl 4-chloro-2-oxobut-3-ynoate has been synthesized for the first time and its addition to alkyl vinylethers of various structures has been studied.
首次合成了 4-氯-2-氧代丁-3-炔酸乙酯,并对其加成到各种结构的烷基乙烯基醚中进行了研究。
Synthesis and unusual [2+2]-cycloaddition reactions of ethyl 4-chloro-2-oxobut-3-ynoate with unactivated alkenes
作者:Andrey B. Koldobskii、Ekaterina V. Solodova、Ivan A. Godovikov、Valery N. Kalinin
DOI:10.1016/j.tet.2008.07.066
日期:2008.9
steps with high overall yield. An unusual ability of the former to furnish [2+2]-cycloadducts with 1,1-disubstituted alkenes in the absence of irradiation and catalysts was discovered. The cycloaddition of ethyl 4-chloro-2-oxobut-3-ynoate to the 1,2-disubstituted alkenes was shown to be effectively catalyzed with stannic chloride.