Alkaline bromine-methanol oxidation of 5-(α-hydroxybenzyl)furoic acids gives 6-aryl-5-hydroxy-2H-pyran-2-ones by a unique multistep oxidative decarboxylation-ring expansion sequence. Some studies into the reaction sequence are given.
5-(α-羟基苄基)
糠酸的碱
溴-
甲醇氧化反应通过独特的多步氧化脱羧环扩展序列得到6-芳基-5-羟基-
2H-吡喃-2-酮。对反应顺序进行了一些研究。