期刊
CHEMICAL COMMUNICATIONS
卷 48, 期 65, 页码 8141-8143出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc34062c
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资金
- National Science Foundation [CHE-0749907, CRIF MU-0840504]
- Ake Wiberg Foundation
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0749907, 0840504] Funding Source: National Science Foundation
Despite the relatively low reactivities of urea and thiourea functional groups towards nucleophilic attack, we have found conditions in which they are useful substrates in Friedel-Crafts reactions. The Bronsted superacid, triflic acid, promotes these reactions and a mechanism is proposed involving dicationic, superelectrophilic intermediates.
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