1
|
Volkova YA, Averina EB, Vasilenko DA, Sedenkova KN, Grishin YK, Bruheim P, Kuznetsova TS, Zefirov NS. Unexpected Heterocyclization of Electrophilic Alkenes by Tetranitromethane in the Presence of Triethylamine. Synthesis of 5-Nitroisoxazoles. J Org Chem 2019; 84:3192-3200. [PMID: 30726081 DOI: 10.1021/acs.joc.8b03086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel reaction of tetranitromethane with electrophilic alkenes in the presence of triethylamine affording substituted 5-nitroisoxazoles is described. Triethylamine reacts with tetranitromethane to generate N-nitrotriethylammonium and trinitromethanide. This process provides the heterocyclization of electrophilic alkenes. A variety of α,β-unsaturated aldehydes, ketones, esters, amides, phosphonates, nitro, and sulfur compounds was involved in the heterocyclization reaction, and a wide range of functionalized 5-nitroisoxazoles was obtained in good to high yields. The scope and limitations of the reaction and the mechanistic proposal are discussed.
Collapse
Affiliation(s)
- Yulia A Volkova
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119992 , Russia
| | - Elena B Averina
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119992 , Russia
| | - Dmitry A Vasilenko
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119992 , Russia
| | - Kseniya N Sedenkova
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119992 , Russia
| | - Yuri K Grishin
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119992 , Russia
| | - Per Bruheim
- Department of Biotechnology , Norwegian University of Science and Technology , Sem Selands vei 6/8 , N-7431 Trondheim , Norway
| | - Tamara S Kuznetsova
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119992 , Russia
| | - Nikolai S Zefirov
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1-3 , Moscow 119992 , Russia
| |
Collapse
|