An efficient and practical synthetic approach was developed for the tandem synthesis of trisubstituted 2-pyrone derivatives from sulfoxonium ylides and cyclopropenones.This[3+3]annulation reaction was carried out unde...An efficient and practical synthetic approach was developed for the tandem synthesis of trisubstituted 2-pyrone derivatives from sulfoxonium ylides and cyclopropenones.This[3+3]annulation reaction was carried out under transition-metal-free conditions.A broad range of functional groups were tolerant under mild conditions,and a variety of 2-pyrones were obtained in moderate to good yields.展开更多
基金This work was supported by the National Natural Science Foundation of China(Nos.81573286 and 81373259).
文摘An efficient and practical synthetic approach was developed for the tandem synthesis of trisubstituted 2-pyrone derivatives from sulfoxonium ylides and cyclopropenones.This[3+3]annulation reaction was carried out under transition-metal-free conditions.A broad range of functional groups were tolerant under mild conditions,and a variety of 2-pyrones were obtained in moderate to good yields.
