Atropisomeric Chiral Diiododienes (Z,Z)-2,3-Di(1-iodoalkylidene)tetralins: Synthesis, Enantiomeric Resolution, and Application in Asymmetric Catalysis

Autor: Yuta Amano, Kiyohiko Nakajima, Naoko Takenaga, Hao Hu, Toshifumi Dohi, Tamotsu Takahashi, Masamichi Ogasawara, Yasuyuki Kita, Hirotaka Sasa, Hikaru Nakajima
Rok vydání: 2017
Předmět:
Zdroj: Organic Letters. 19:4102-4105
ISSN: 1523-7052
1523-7060
DOI: 10.1021/acs.orglett.7b01876
Popis: The C2-symmetric tetralin-fused 1,4-diiodo-1,3-butadiene derivatives, (Z,Z)-2,3-di(1-iodoalkylidene)tetralin 1a-c, are atropisomeric and can be resolved into the two persistent axially chiral enantiomers by HPLC on a chiral stationary phase. The enantiomerically pure compounds can serve as chiral organocatalysts for dearomatizing spirolactonization to show good performances in up to 73 % ee.
Databáze: OpenAIRE