60070-05-5Relevant articles and documents
A Unified Catalytic Asymmetric (4+1) and (5+1) Annulation Strategy to Access Chiral Spirooxindole-Fused Oxacycles
Gao, Min,Gong, Xiangnan,Hu, Lin,Luo, Yanshu,Xia, Yuanzhi,Xu, Qianlan,Zhao, Yukun
supporting information, p. 19813 - 19820 (2021/08/03)
A unified catalytic asymmetric (N+1) (N=4, 5) annulation reaction of oxindoles with bifunctional peroxides has been achieved in the presence of a chiral phase-transfer catalyst (PTC). This general strategy utilizes peroxides as unique bielectrophilic four- or five-atom synthons to participate in the C?C and the subsequent umpolung C?O bond-forming reactions with one-carbon unit nucleophiles, thus providing a distinct method to access the valuable chiral spirooxindole-tetrahydrofurans and -tetrahydropyrans with good yields and high enantioselectivities under mild conditions. DFT calculations were performed to rationalize the origin of high enantioselectivity. The gram-scale syntheses and synthetic utility of the resultant products were also demonstrated.
Methyl and Dimethyl o-Xylenyl-Substituted Fullerene Acceptors for Polymer Solar Cells
Kim, Hee Un,Park, Jong Baek,Grimsdale, Andrew C.,Hwang, Do-Hoon
, p. 1017 - 1027 (2015/09/28)
A series of fullerene derivatives based on methyl- and dimethyl-substituted o-xylenyl groups were synthesized via Diels-Alder reaction from fullerene (C60) and dienes derived from α,α′-dibromo-o-xylene derivatives. The synthesized 1-methyl-4,5-
Closely stacked oligo(phenylene ethynylene)s: Effect of π-stacking on the electronic properties of conjugated chromophores
Jagtap, Subodh P.,Mukhopadhyay, Sukrit,Coropceanu, Veaceslav,Brizius, Glen L.,Bredas, Jean-Luc,Collard, David M.
supporting information; experimental part, p. 7176 - 7185 (2012/06/15)
In this work, a bicyclo[4.4.1]undecane scaffold is used to hold oligo(phenylene ethynylene) units in a cofacially stacked arrangement along the entire length of the conjugated units. We study the impact that the resulting strong interchain interactions ha