Tandem Esterification/1, 4-Addition-Type Friedel–Crafts Alkylation Reactions of Phenols/Naphthols with Olefinic Thioazlactones: Access to Functionalized 1, 2- …

A Ziyaei Halimehjani, M Khoshdoun

Index: Qiang, Dong Zhi; Shi, Jing Bo; Song, Bao An; Liu, Xin Hua RSC Advances, 2014 , vol. 4, # 11 p. 5607 - 5617

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Abstract

... an enantioselective [4 + 2] cycloaddition of o-hydroxylstyrenes with azlactones has been established by Shi et al. ... H NMR spectra of the products showed two characteristic signals between 5.00 and 6.00 ppm for the aliphatic CH resonances of the 3,4-dihydrochromen-2 ...