期刊
SCIENCE
卷 327, 期 5963, 页码 315-319出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1182512
关键词
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资金
- A. P. Sloan Foundation
- NSF [CHE-0910014]
- U.S. Department of Defense
- Scripps Research Institute
- Skaggs Oxford Scholarship program
- National Institute of General Medical Sciences [1 R01 GM084019-02]
- Amgen
- Eli Lilly Co
The Mizoroki-Heck reaction, which couples aryl halides with olefins, has been widely used to stitch together the carbogenic cores of numerous complex organic molecules. Given that the position-selective introduction of a halide onto an arene is not always straightforward, direct olefination of aryl carbon-hydrogen (C-H) bonds would obviate the inefficiencies associated with generating halide precursors or their equivalents. However, methods for carrying out such a reaction have suffered from narrow substrate scope and low positional selectivity. We report an operationally simple, atom-economical, carboxylate-directed Pd(II)-catalyzed C-H olefination reaction with phenylacetic acid and 3-phenylpropionic acid substrates, using oxygen at atmospheric pressure as the oxidant. The positional selectivity can be tuned by introducing amino acid derivatives as ligands. We demonstrate the versatility of the method through direct elaboration of commercial drug scaffolds and efficient syntheses of 2-tetralone and naphthoic acid natural product cores.
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