期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 70, 期 14, 页码 5725-5728出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo050645n
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资金
- NIGMS NIH HHS [R01 GM072586, R01 GM072586-01A1] Funding Source: Medline
The promising utility of triazolyl N-heterocyclic carbene catalysts in umpolung aldehyde chemistry requires a straightforward reliable synthesis from readily available materials. Herein, we describe the synthesis of a variety of triazolyl N-heterocyclic carbene precursors. The reactions commence from commercially available amino acids and proceed in 44-68% overall yields. The N-heterocyclic salts are air-stable crystalline solids that can be stored with no special precaution and can generate the active catalyst when treated with an appropriate base.
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