[2+2] Cycloaddition and electrophilic alkynylation reactions of 4-chloro-1,1,1-trifluorobut-3-yn-2-one and alkyl vinyl ethers
作者:A. B. Koldobskii、N. P. Tsvetkov、I. A. Godovikov、V. N. Kalinin
DOI:10.1007/s11172-009-0192-2
日期:2009.7
Reaction of 4-chloro-1,1,1-trifluorobut-3-yn-2-one with alkyl vinylethers leads to the parallel formation of [2+2] cycloaddition and electrophilic alkynylation products, the ratio of which depends on the nature of vinylether. Preparative methods for the separation of compounds formed are suggested.
Haloalkynylation of norbornadiene with haloacetylenes activated with a trifluoroacetyl or ethoxalyl group
作者:A. B. Koldobskii、E. V. Solodova、V. N. Kalinin
DOI:10.1007/s11172-010-0107-2
日期:2010.2
Reactions of norbornadiene with haloacetylenes activated with a trifluoroacetyl or ethoxalyl group proceed as stereospecific conjugated exo-addition of the alkynyl substituent and the halogen atom to the double bond of norbornadiene.