%0 Journal Article %A Ma, Shengming %A Xie, Hexin %D 2000 %T Unexpected Facile Sequential Halolactamization−Hydroxylation of 2,3-Allenamides with CuX2 for the Efficient Synthesis of 4-Halo-5-hydroxypyrrol-2(5H)-ones %U https://acs.figshare.com/articles/journal_contribution/Unexpected_Facile_Sequential_Halolactamization_Hydroxylation_of_2_3-Allenamides_with_CuX_sub_2_sub_for_the_Efficient_Synthesis_of_4-Halo-5-hydroxypyrrol-2_5_i_H_i_-ones_sup_sup_/3737247 %R 10.1021/ol006504j.s001 %2 https://ndownloader.figshare.com/files/5829015 %K Halolactamization %K one %K Halo %K CuX 2 %X 4-Halo-5-hydroxypyrrol-2(5H)-ones were synthesized from the efficient sequential halolactamization−hydroxylation reaction of 4-monosubstituted 2,3-allenamides with CuX2 (X = Br, Cl) in high yields. Halolactamization of fully substituted 2,3-dienamide (1f) afforded 4-halo-pyrrol-2(5H)-ones. %I ACS Publications