Ethyl lactate as a promising bio based green solvent for the synthesis of spiro-oxindole derivatives via 1,3-dipolar cycloaddition reaction
摘要:
Ethyl lactate as a bio based green solvent was used, for the first time to promote the 1,3-dipolar cyclo-addition reaction of azomethine ylide generated in situ by the decarboxylative condensation of substituted isatin and proline with napthoquinone as dipolarophile, which generates a series of medicinally privileged spiro[benzo[f]pyrrolo[2,1-a]isoindole-5,3'-indoline]-2',6,11-trione derivatives in excellent yields at room temperature. (C) 2013 Elsevier Ltd. All rights reserved.
Facile Three-Component Synthesis of Spirooxindolepyrrololine Ring Systems via 1,3-Dipolar Cycloaddition with 1,4-Naphthoquinone
作者:Hua Chen、Shun-Yi Wang、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1080/00397911.2010.517413
日期:2011.11.15
1,3-Dipolar cycloadditions involving 1,4-naphthoquinone and an azomethine ylide generated from a-amino acids and isatins have been used in this reaction to afford the pyrrolidine-2-spiro-3'-oxindole 4 or 5 with moderate to excellent yields.
Ethyl lactate as a promising bio based green solvent for the synthesis of spiro-oxindole derivatives via 1,3-dipolar cycloaddition reaction
作者:Anshu Dandia、Anuj K. Jain、Ashok K. Laxkar
DOI:10.1016/j.tetlet.2013.05.035
日期:2013.7
Ethyl lactate as a bio based green solvent was used, for the first time to promote the 1,3-dipolar cyclo-addition reaction of azomethine ylide generated in situ by the decarboxylative condensation of substituted isatin and proline with napthoquinone as dipolarophile, which generates a series of medicinally privileged spiro[benzo[f]pyrrolo[2,1-a]isoindole-5,3'-indoline]-2',6,11-trione derivatives in excellent yields at room temperature. (C) 2013 Elsevier Ltd. All rights reserved.