1488-61-5Relevant academic research and scientific papers
Facile access to 2,2-diaryl 2: H -chromenes through a palladium-catalyzed cascade reaction of ortho -vinyl bromobenzenes with N -tosylhydrazones
Huang, Xueliang,Yu, Yinghua,Zhang, Heng
supporting information, p. 5115 - 5119 (2020/07/23)
A palladium-catalyzed cascade reaction of ortho-vinyl bromobenzenes with N-tosylhydrazones has been developed, which provides a facile approach to 2,2-disubstituted 2H-chromenes. The migration of palladium from the aryl to vinyl position is crucial, as the in situ produced vinyl palladium intermediate could further react with diazo compounds to generate the reactive species for the sequential annulation. This journal is
Catalysis by β-Cyclodextrin Hydrate - Synthesis of 2,2-Disubstituted 2H-Chromenes in Aqueous Medium
Ghatak, Avishek,Khan, Sagar,Bhar, Sanjay
supporting information, p. 435 - 443 (2016/02/18)
A cost-effective, operationally simple and eco-compatible protocol for the one-pot synthesis of photochromic pyrans by the reaction of propargyl alcohols as well as propargyl ethers with differently substituted phenols under ambient atmosphere in aqueous
