期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 141, 期 30, 页码 11858-11863出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b06326
关键词
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资金
- MINECO/FEDER, UE [CTQ2016-75960-P]
- AGAUR [2014 SGR 818]
- CERCA Program/Generalitat de Catalunya
- Deutsche Forschungsgemeinschaft
- Rackham Global Engagement Fund
Chiral gold(I) catalysts have been designed based on a modified JohnPhos ligand with a distal C-2-2,5-diarylpyrrolidine that creates a tight binding cavity. The C-2-chiral element is close to where the C-C bond formation takes place in cyclizations of 1,6-enynes. These chiral mononuclear catalysts have been applied for the enantioselective 5-exo-dig and 6-endo-dig cyclization of different 1,6-enynes as well as in the first enantioselective total synthesis of three members of the carexane family of natural products. Opposite enantioselectivities have been achieved in seemingly analogous reactions of 1,6-enynes, which result from different chiral folding of the substrates based on attractive aryl aryl interactions.
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