Enantioselective Friedel-Crafts reaction of hydroxyarenes with nitroenynes to access chiral heterocycles via sequential catalysis
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Montesinos Magraner, Marc; Lluna-Galán, Carles; Cernicharo‐Toledo, Francisco; Vila Descals, Carlos; Blay Llinares, Gonzalo; Pedro, José Ramón
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Aquest document és un/a article, creat/da en: 2021
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Naphthols, hydroxyindoles and an activated phenol are reacted with differently substituted (E)-nitrobut-1-en-3-ynes using the commercially available Rawal's chiral squaramide. The corresponding β-nitroalkynes were obtained with good yields and excellent enantioselectivities. Moreover, dihydronaphthofurans can be accessed via silver catalysed cyclization in a tandem one-pot procedure, with high preservation of the optical purity. |
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