Synthesis of Novel S,O-Substituted 1,4-Benzoquinones
作者:F. Serpil Goksel、Nilufer Bayrak、Cemil Ibis
DOI:10.1080/10426507.2013.798787
日期:2014.1
Abstract This study presents the synthesis and characterization of novel derivatives of S,O-substituted 1,4-benzoquinones obtained from the reactions of 2,6-diethoxy-3,5-dichloro-1,4-benzoquinone; 2,5-diethoxy-3,6-dichloro-1,4-benzoquinone; and p-chloranil with some aliphatic and aromatic thiols. The structures of these novel compounds were characterized by microanalysis, FT-IR, 1H NMR, 13C NMR, MS
Spectroscopic and structural aspects of the reactions of 1,4-quinones with sulfur and nitrogen nucleophiles
作者:Nilufer Bayrak、Amaç Fatih Tuyun、Hatice Yıldırım、Nihal Onul
DOI:10.1016/j.crci.2013.10.022
日期:2014.6
Résumé A series of 1,4-benzoquinone derivatives from 2,5-dichloro-3,6-diethoxy-1,4-benzoquinone and 2,6-dichloro-3,5-diethoxy-1,4-benzoquinone were prepared by nucleophilic substitution reactions of sulfur and nitrogen nucleophiles. Spectral techniques (1H NMR, 13C NMR, FT–IR, and LC–MS) were employed to structurally characterize the reaction products of alkoxy, chloro substituted-1,4-benzoquinones with thiols and amines in the presence of sodium carbonate in ethanol at room temperature. The orientations and the regioselectivity of the reactions of alkoxy, chloro substituted-1,4-benzoquinones with various thiol and amine nucleophiles are discussed.