Squaramide-Catalyzed Enantioselective Michael Addition of Pyrazol-3- ones to ortho-Quinone Methides (Complementary material)
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Squaramide-Catalyzed Enantioselective Michael Addition of Pyrazol-3- ones to ortho-Quinone Methides (Complementary material)

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Squaramide-Catalyzed Enantioselective Michael Addition of Pyrazol-3- ones to ortho-Quinone Methides (Complementary material)

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Carceller-Ferrer, Laura; Blay Llinares, Gonzalo Perfil; Pedro, José Ramón; Vila Descals, Carlos
This document is a Date2020
(Complementary material)The ortho effect arises in certain electrophilic aromatic substitutions when a meta director is meta to an ortho/para director. Among the three expected isomer products, only the two isomers ortho to the meta director are produced normally. To find an explanation for the ortho effect, nitrations of two properly substituted benzenes were explored. Evidence supported an explanation based on resonance involving the meta director.

    Squaramide-Catalyzed Enantioselective Michael Addition of Pyrazol-3- ones to ortho-Quinone Methides. Letters in Organic Chemistry, Volume 17 , Issue 11, 837. https://www.eurekaselect.com/174110/article

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