1
|
Li S, Li Z, Yuan Y, Li Y, Zhang L, Wu Y. Gold(I)-catalyzed aminohalogenation of fluorinated N'-aryl-N-propargyl amidines for the synthesis of imidazole derivatives under mild conditions. Chemistry 2012; 19:1496-501. [PMID: 23255354 DOI: 10.1002/chem.201202402] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Indexed: 11/11/2022]
Abstract
A procedure for the synthesis of fluorinated imidazole derivatives from propargyl amidines has been developed. Under gold(I) catalysis, propargyl amidines were converted into 5-fluoromethyl imidazoles in the presence of Selectfluor through a cascade cyclization/fluorination process. In contrast, imidazole-5-carbaldehydes were obtained in high yields when N-iodosuccinimide (NIS) was used as the halogenating reagent. The polarity of the solvent and light had significant impact on the formation of the carbaldehydes. These transformations showed excellent functional-group tolerance. An unfluorinated substrate with an electron-withdrawing group also underwent aminohalogenation to give the corresponding product in good yield. Mechanistic investigation revealed the general pathways of these transformations.
Collapse
Affiliation(s)
- Shan Li
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Road, Shanghai 200032, PR China
| | | | | | | | | | | |
Collapse
|
2
|
Gerus II, Mironetz RX, Kondratov IS, Bezdudny AV, Dmytriv YV, Shishkin OV, Starova VS, Zaporozhets OA, Tolmachev AA, Mykhailiuk PK. “Reported, but Still Unknown.” A Closer Look into 3,4-Bis- and 3,4,5-Tris(trifluoromethyl)pyrazoles. J Org Chem 2011; 77:47-56. [DOI: 10.1021/jo202305c] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Igor I. Gerus
- Enamine Ltd., Oleksandra
Matrosova
Street, 23, Kyiv 01103, Ukraine
- Institute of Bioorganic Chemistry
and Petrochemistry, National Ukrainian Academy of Science, Murmanska 1, Kiev 02660, Ukraine
| | - Roman X. Mironetz
- Institute of Bioorganic Chemistry
and Petrochemistry, National Ukrainian Academy of Science, Murmanska 1, Kiev 02660, Ukraine
| | - Ivan S. Kondratov
- Enamine Ltd., Oleksandra
Matrosova
Street, 23, Kyiv 01103, Ukraine
- Institute of Bioorganic Chemistry
and Petrochemistry, National Ukrainian Academy of Science, Murmanska 1, Kiev 02660, Ukraine
| | - Andrei V. Bezdudny
- Enamine Ltd., Oleksandra
Matrosova
Street, 23, Kyiv 01103, Ukraine
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska
Street 5, 02660, Kyiv 94, Ukraine
| | - Yurii V. Dmytriv
- Enamine Ltd., Oleksandra
Matrosova
Street, 23, Kyiv 01103, Ukraine
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska
Street 5, 02660, Kyiv 94, Ukraine
| | - Oleg V. Shishkin
- STC, Institute for Single Crystalls, National Academy of Science of Ukraine, 60 Lenina Avenue, Kharkiv 61001,
Ukraine
| | - Viktoriia S. Starova
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska
Street, 64, Kyiv 01033, Ukraine
| | - Olga A. Zaporozhets
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska
Street, 64, Kyiv 01033, Ukraine
| | - Andrey A. Tolmachev
- Enamine Ltd., Oleksandra
Matrosova
Street, 23, Kyiv 01103, Ukraine
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska
Street, 64, Kyiv 01033, Ukraine
| | - Pavel K. Mykhailiuk
- Enamine Ltd., Oleksandra
Matrosova
Street, 23, Kyiv 01103, Ukraine
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska
Street, 64, Kyiv 01033, Ukraine
| |
Collapse
|
3
|
Ma KR, Zhu YL, Zhang Y, Li RQ, Cao L. A Two-Dimensional Terrace-Like N-heterocyclic-Pb(II) Coordination Compound: Structure and Photoluminescence Property. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.3.894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
4
|
O’Mahony G, Pitts AK. Synthesis of Tertiary Amides from Anionically Activated Aromatic Trifluoromethyl Groups. Org Lett 2010; 12:2024-7. [DOI: 10.1021/ol100507n] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Gavin O’Mahony
- AstraZeneca R&D Mölndal, Pepparedsleden 1, 43183 Mölndal, Sweden
| | - Andrew K. Pitts
- AstraZeneca R&D Mölndal, Pepparedsleden 1, 43183 Mölndal, Sweden
| |
Collapse
|
5
|
Palumbo Piccionello A, Pace A, Buscemi S, Vivona N, Pani M. Synthesis of trifluoromethylated 2-benzoyl- and 2-aminoimidazoles from ring rearrangement of 1,2,4-oxadiazole derivatives. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.02.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|