《Rhodium-Catalyzed Cascade Reactions of Indoles with 4-Hydroxy-2-Alkynoates for the Synthesis of Indole-Fused Polyheterocycles》 was written by Wu, Xiaowei; Li, Pinyi; Lu, Yangbin; Qiao, Jin; Zhao, Jingwei; Jia, Xiuwen; Ni, Hangcheng; Kong, Lichun; Zhang, Xiaoning; Zhao, Fei. Related Products of 623-47-2 And the article was included in Advanced Synthesis & Catalysis in 2020. The article conveys some information:
Herein, the authors describe an efficient and regioselective Rh(III)-catalyzed [4+2]-annulation/lactonization cascade of indoles with 4-hydroxy-2-alkynoates at room temperature to access the furo[3′,4′:4,5]pyrimido[1,6-a]indole-1,5(3H,4H)-diones I [R1 = H, 10-OMe, 9-CN, 8-F, etc., R2 = H, Me, Ph, CH2CN, etc., R3 = H, Me, (CH2)2Ph, etc., R4 = H, Me, Et, R3R4 = (CH2)4, (CH2)5, (CH2)6] and II. This method features mild reaction conditions, operational simplicity, excellent regioselectivity, broad substrate scope with good functional group tolerance, and good to excellent yields. The results came from multiple reactions, including the reaction of Ethyl propiolate(cas: 623-47-2Related Products of 623-47-2)
Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Related Products of 623-47-2
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Ester – an overview | ScienceDirect Topics