Iodine-Promoted Synthesis of 3-Arylindolizine-1-Carboxylates from 2-(2-Nitro-1-Arylethyl)Malonates and Pyridine
作者:Yun Li、Zhengquan Zhou、Weijian Ye、Juanjuan Liu、Juan Yao、Cunde Wang
DOI:10.3184/174751913x13737205567934
日期:2013.9
An efficient and straightforward one-pot synthetic protocol has been developed for the synthesis of 3-arylindolizine-1-carboxylates via 1,3-dipolar annulation of 2-(2-nitro-1-arylethyl)malonates with pyridine and subsequent aromatisation in the presence of molecular iodine. The structure of methyl 3-(4-methoxyphenyl)indolizine-1-carboxylate (2a) and methyl 3-iodo-2-(4-nitrophenyl)indolizine-1-carboxylate
已经开发了一种高效且直接的一锅合成方案,用于通过 2-(2-硝基-1-芳基乙基)丙二酸酯与吡啶的 1,3-偶极环化以及随后在分子碘的存在。通过 X 射线单晶分析进一步证实了 3-(4-甲氧基苯基)indolizine-1-carboxylate (2a) 和 3-iodo-2-(4-nitrophenyl)indolizine-1-carboxylate 甲酯 (2f) 的结构.