Stereoselective synthesis of para-quinone monoketals through tri-bromide (TBr) mediated oxidative dearomatization of phenols
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DOI: 10.1016/j.tetlet.2020.151646
Abstract: Abstract A metal free one-pot stereoselective synthesis of para-quinone monoketals and their derivatives has been reported in this present work. Tri-bromides (TBrs) have been employed as an effective reagent for intramolecular spirocyclizations leading to excellent… read more here.
Keywords: synthesis para; quinone monoketals; stereoselective synthesis; para quinone ... See more keywords
Direct Synthesis of para-Nitrophenyl Glycosides from Reducing Sugars in Water.
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DOI: 10.1021/acs.orglett.0c00728
Abstract: Reducing sugars may be directly converted into the corresponding para-nitrophenyl (pNP) glycosides using 2-chloro-1,3-dimethylimidazolinium chloride (DMC), para-nitrophenol, and a suitable base in aqueous solution. The reaction is stereoselective for sugars with either a hydroxyl or… read more here.
Keywords: reducing sugars; nitrophenyl glycosides; direct synthesis; synthesis para ... See more keywords
Synthesis of para-linked azacalix[n]pyridine[n]pyrazines and their uranyl ions binding property
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DOI: 10.1039/d1qo01387d
Abstract: Based on the fragment coupling strategy, the novel macrocycles, para-linked azacalix[n]pyridine[n]pyrazines (n = 2, 4) with coexisting different heteroaromatics were synthesized readily starting from 2,5-dibromopyrazine and 2,6-dibromopyridine. According to the... read more here.
Keywords: azacalix pyridine; linked azacalix; synthesis para; pyridine pyrazines ... See more keywords