Facile conversion of para-benzoquinones to para-alkoxyphenols with primary/secondary alcohols and amberlyst-15: a process showing novel reducing property of such alcohols

Diverse Nrf2 Activators Coordinated to Cobalt Carbonyls Induce Heme Oxygenase-1 and Release Carbon Monoxide in Vitro and in Vivo

“…Preparation of 8, 9, and 12 (precursors of 3, 4, and 7) are reported in the SI. 10 and 11 were prepared according to published reports, 33,34 and spectral properties were in accordance with those reported. 1 H and 13 C spectra for characterization of new compounds were collected in CDCl 3 or C 6 D 6 (Euriso-top) at 20 °C and were recorded on a Bruker Avance-II 400 MHz spectrometer.…”

“…1 (Hexacarbonyldicobalt)-4-(prop-2-yn-1-yloxy)phenol (5). To a degassed solution of 4-propargyloxyphenol 33 10 (64 mg, 0.43 mmol) in CHCl 3 (0.1 M) was added dicobalt octacarbonyl (1.0 equiv). After 18 h of stirring at 20 °C, the reaction mixture was concentrated in vacuo.…”

Efficient and recyclable solid acid-catalyzed alkylation of active methylene compound via oxonium intermediate for atom economical synthesis of organic compounds

“…[16] Consequently, AMCs are highly acidic and can be deprotonated easily under acidic or basic conditions because AMC acts as a multi coupling reagent with both electrophilic and nucleophilic sites. [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] In Scheme 1, different types of AMC compounds are highly used in various pharmaceutical, fragrance, flavor, and fragrance industries to produce food supplements [16]. Herein, we reported a simple and greener protocol for alkylation of AMCs with CEE and aryl acetals using a solid acid catalyst.…”

Kinetic study on alkylation of hydroquinone with methanol over SO3H functionalized Brønsted acidic ionic liquids

“…[ 10 ] An activity of alkali metal‐loaded MgO catalyst was tested for selective production of methoxyphenols from dihydroxybenzenes using dimethyl carbonate by Vijayaraj and Gopinath [ 11 ] in a vertical downflow glass reactor. Conversion of BQ to p ‐alkoxyphenols using primary/secondary alcohols was presented by Mondal et al [ 12 ] Various patents were published for etherification of hydroxybenzene and their derivatives in presence of tertiary amines, acids, and their combinations. [ 3,6,7,13–20 ]…”

“…[10] An activity of alkali metal-loaded MgO catalyst was tested for selective production of methoxyphenols from dihydroxybenzenes using dimethyl carbonate by Vijayaraj and Gopinath [11] in a vertical downflow glass reactor. Conversion of BQ to p-alkoxyphenols using primary/ secondary alcohols was presented by Mondal et al [12] Various patents were published for etherification of hydroxybenzene and their derivatives in presence of tertiary amines, acids, and their combinations. [3,6,7,[13][14][15][16][17][18][19][20] A number of researchers have studied the detailed kinetics and mechanism for alkylation of phenol, [21][22][23][24][25] but very few reports (only two research articles) are available on kinetic study for monoalkylation of HQ.…”