63194-79-6Relevant articles and documents
Organophotoredox-catalyzed intermolecular Oxa-[4+2] cycloaddition reactions
Tanaka, Kenta,Omata, Daichi,Asada, Yosuke,Hoshino, Yujiro,Honda, Kiyoshi
, p. 10669 - 10678 (2019)
An intermolecular oxa-[4+2] cycloaddition reaction promoted by a thioxanthylium photoredox catalyst under irradiation with green light has been developed. The reaction of ortho-quinone methides with styrenes smoothly affords the desired cycloadducts. Espe
N-Heterocyclic Carbene-Catalyzed [4 + 2] Cyclization of Saturated Carboxylic Acid with o-Quinone Methides through in Situ Activation: Enantioselective Synthesis of Dihydrocoumarins
Wang, Yuanfeng,Pan, Jian,Dong, Jingjiao,Yu, Chenxia,Li, Tuanjie,Wang, Xiang-Shan,Shen, Shide,Yao, Changsheng
, p. 1790 - 1795 (2017)
An N-heterocyclic carbene (NHC)-catalyzed formal [4 + 2] synthesis of dihydrocoumarins was realized from saturated carboxylic acids and o-quinone methides via an in situ activation strategy. This protocol results in excellent diastereoselectivity and enantioselectivity and good yields and uses readily available and inexpensive starting materials.