A Concise Synthesis of Arnottin I via Internal Biaryl Coupling Reaction Using Palladium Reagent
摘要:
Total synthesis of arnottin I (1) was accomplished via the internal aryl-aryl coupling reaction of iodo-ester (2) by the palladium-assisted cyclization reaction.
A Concise Synthesis of Arnottin I via Internal Biaryl Coupling Reaction Using Palladium Reagent
摘要:
Total synthesis of arnottin I (1) was accomplished via the internal aryl-aryl coupling reaction of iodo-ester (2) by the palladium-assisted cyclization reaction.
The direct cyclization of aryl triflates with terminal oxiranes was achieved through palladium/norbornene (Pd/NBE) cooperative catalysis. A wide range of 2,3-dihydrobenzofurans were produced in good to high yields by the strategy. Good functional group tolerance was also demonstrated. This reaction provides an alternative method for preparing value-added 2,3-dihydrobenzofurans starting from readily