A Direct Approach to 5-Hydroxybenzofurans via a Platinum-Catalyzed Domino Rearrangement/5-endo-dig Cyclization Reaction of Quinols
摘要:
A highly efficient and atom-economical construction of 2-substituted 5-hydroxybenzofurans was accomplished by employing a platinum-catalyzed domino dienone-phenol rearrangement/5-endo-dig cyclization reaction of quinols bearing alkynes.
A Direct Approach to 5-Hydroxybenzofurans via a Platinum-Catalyzed Domino Rearrangement/5-endo-dig Cyclization Reaction of Quinols
摘要:
A highly efficient and atom-economical construction of 2-substituted 5-hydroxybenzofurans was accomplished by employing a platinum-catalyzed domino dienone-phenol rearrangement/5-endo-dig cyclization reaction of quinols bearing alkynes.
Catalyst-free synthesis of 4-alkynylazobenzenes from quinols
作者:Sukhyun Yoon、Youngeun Jung、Ikyon Kim
DOI:10.1016/j.tetlet.2017.03.027
日期:2017.4
A catalyst-free and environmently benign synthesis of highly conjugated 4-alkynylazoaromatic compounds from quinols having an alkyne is described. Formation of hydrazones by preferential condensation of quinols bearing many sensitive functional groups with mono-substituted hydrazines followed by dehydration under mild reaction conditions is the key to success of this method.