Metal-Free Annulative Hydrosulfonation of Propiolate Esters: Synthesis of 4-Sulfonates of Coumarins and Butenolides

New J. Chem., 2020, Accepted Manuscript DOI: 10.1039/C9NJ06438A, PaperRodney Agustinho Fernandes, Ashvin J Gangani, Rupesh A Kunkalkar An efficient metal-free and cost-effective method for the synthesis of coumarin and butenolide 4-sulfonates (46 examples) has been developed. The reaction involves addition of sulfonic acids to ethyl propiolates followed... The content of this RSS Feed (c) The Royal Society of Chemistry

Source: RSC - New J. Chem. latest articles - February 14, 2020 Category: Chemistry Authors: Rodney Agustinho Fernandes Source Type: research