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Volumn 4, Issue 7, 2014, Pages 2274-2287

Catalytic and computational studies of N-heterocyclic carbene or phosphine-containing copper(I) complexes for the synthesis of 5-iodo-1,2,3-triazoles

Author keywords

azide; click chemistry; copper; cycloaddition; iodotriazole

Indexed keywords

COPPER; CYCLOADDITION; ORGANIC COMPOUNDS; PHOSPHORUS COMPOUNDS;

EID: 84903759030     PISSN: 21555435     EISSN: None     Source Type: Journal    
DOI: 10.1021/cs500326e     Document Type: Article
Times cited : (60)

References (94)
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    • For one earlier copper-free (and non regioselective) example using ionic liquids as reaction medium. See
    • For one earlier copper-free (and non regioselective) example using ionic liquids as reaction medium. See: Zhong, P.; Guo, S.-R. Chin. J. Chem. 2004, 22, 1183-1186
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    • For reactions carried out with a copper tubing/TTTA combination, see
    • For reactions carried out with a copper tubing/TTTA combination, see: Bogdan, A. R.; James, K. Org. Lett. 2011, 13, 4060-4063
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    • For the elegant preparation of 5-iodotriazoles via the in situ electrophilic iodonisation of 5-H-triazoles, see
    • For the elegant preparation of 5-iodotriazoles via the in situ electrophilic iodonisation of 5-H-triazoles, see: Brotherton, W. S.; Clark, R. J.; Zhu, L. J. Org. Chem. 2012, 77, 6443-6455
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  • 44
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    • 1H NMR showed a mixture of starting material and a new compound which could be [CuCl(IPr)(phen)]. All attempts to separate both compounds failed. The lower conversion into a phen-adduct from [CuCl(IPr)] when compared to [CuCl(SIMes)] is probably due to the higher steric hindrance of the IPr ligand. For the synthesis of a related Cu-IPr complex, see
    • 1H NMR showed a mixture of starting material and a new compound which could be [CuCl(IPr)(phen)]. All attempts to separate both compounds failed. The lower conversion into a phen-adduct from [CuCl(IPr)] when compared to [CuCl(SIMes)] is probably due to the higher steric hindrance of the IPr ligand. For the synthesis of a related Cu-IPr complex, see: Krylova, V. A.; Djurovich, P. I.; Whited, M. T.; Thompson, M. Chem. Commun. 2010, 46, 6696-6698
    • (2010) Chem. Commun. , vol.46 , pp. 6696-6698
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  • 45
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    • [CuCl(IPr)] is available from Sigma-Aldrich, Strem and TCI. For its synthesis, see
    • [CuCl(IPr)] is available from Sigma-Aldrich, Strem and TCI. For its synthesis, see: Jurkauskas, V.; Sadighi, J. P.; Buchwald, S. L. Org. Lett. 2003, 5, 2417-2420
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    • For a single example with a phosphite ligand, see
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    • Reddy and co-workers reported the only ligandless catalytic system for this reaction: However, when we applied their reaction conditions (5 mol % CuI in DMSO at 80°C for 18 h) to our model reaction, only 8% conversion into triazole 1a was obtained
    • Reddy and co-workers reported the only ligandless catalytic system for this reaction: Reddy, K. R.; Venkateshwar, M.; Maheswari, C. U.; Kumar, P. S. Tetrahedron Lett. 2010, 51, 2170-2173 However, when we applied their reaction conditions (5 mol % CuI in DMSO at 80°C for 18 h) to our model reaction, only 8% conversion into triazole 1a was obtained.
    • (2010) Tetrahedron Lett. , vol.51 , pp. 2170-2173
    • Reddy, K.R.1    Venkateshwar, M.2    Maheswari, C.U.3    Kumar, P.S.4


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.