Sustainable oxidative cleavage of catechols for the synthesis of muconic acid and muconolactones including lignin upgrading
作者:Florentin Coupé、Laurène Petitjean、Paul T. Anastas、Frédéric Caijo、Vincent Escande、Christophe Darcel
DOI:10.1039/d0gc02157a
日期:——
oxidative cleavage to muconic acid using performic acid in an intriguingly safe fashion. Common iron salts were used as catalysts to a level as low as 0.005 mol%, for a maximum turnover number of 13 200. Maximum muconic acidyield reached 84% after isolation by simple filtration. This procedure optimized on catechol was also efficient over a wide range of substituted catechols, providing access to muconolactones
Synthesis and reactivity of aliphatic sulfur pentafluorides from substituted (pentafluorosulfanyl)benzenes
作者:Norbert Vida、Jiří Václavík、Petr Beier
DOI:10.3762/bjoc.12.12
日期:——
hydrogen peroxide and sulfuric acid provided a mixture of SF5-substituted muconolactone, maleic, and succinic acids. A plausible mechanism for the formation of the aliphatic SF5 compounds was presented and their chemical reactivity was investigated. SF5-substituted para-benzoquinone was synthesized; its oxidation led to an improved yield of 2-(pentafluorosulfanyl)maleic acid. The reaction of SF5-substituted