Journal
ORGANIC LETTERS
Volume 17, Issue 20, Pages 5108-5111Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b02617
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Funding
- JST (ACT-C: Advanced Catalytic Transformation program for Carbon utilization)
- JSPS [25410036]
- Noguchi Institute
- Grants-in-Aid for Scientific Research [26620078, 25410036] Funding Source: KAKEN
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The catalytic asymmetric ene reaction with difluoropyruvate as an electrophile in the presence of a dicationic palladium complex is shown. This is the reliable and practical catalytic asymmetric synthesis for various alpha-CF2H tertiary alcohols in high yields and enantioselectivities. The reaction with isobutene can be catalyzed efficiently under solvent-free conditions with low catalyst loading (up to S/C 2000). Furthermore, difluoropyruvate is applicable to the [2+2] cycloaddition reaction in high yields and enantioselectivities.
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