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Volumn 20, Issue 35, 2014, Pages 11101-11110

Ruthenium-catalyzed cycloadditions of 1-haloalkynes with nitrile oxides and organic azides: Synthesis of 4-haloisoxazoles and 5-halotriazoles

Author keywords

alkynes; cycloadditions; halides; regioselectivity; ruthenium

Indexed keywords

AMIDES; CATALYSIS; CHLORINE COMPOUNDS; HYDROCARBONS; KETONES; NITROGEN COMPOUNDS; NITROGEN OXIDES; REGIOSELECTIVITY;

EID: 84906785778     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.201402559     Document Type: Article
Times cited : (107)

References (122)
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    • The regiochemistry of the 4-haloisoxazole product was confirmed in two ways: 1) Compound 3 a was subjected to magnesium-halogen exchange with ethyl magnesium bromide followed by a subsequent proton quench with methanol to yield the parent 4-proto-isoxazole. Concurrently, the same compound was prepared for comparison purposes through the copper-catalyzed cycloaddition of alkyne 70 + hydroximoyl chloride 2. 2) An X-ray crystal structure of compound 8 was obtained. See the Supporting Information for experimental details.
    • The regiochemistry of the 4-haloisoxazole product was confirmed in two ways: 1) Compound 3 a was subjected to magnesium-halogen exchange with ethyl magnesium bromide followed by a subsequent proton quench with methanol to yield the parent 4-proto-isoxazole. Concurrently, the same compound was prepared for comparison purposes through the copper-catalyzed cycloaddition of alkyne 70 + hydroximoyl chloride 2. 2) An X-ray crystal structure of compound 8 was obtained. See the Supporting Information for experimental details.
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    • The regiochemistry of the 5-halotriazole product was confirmed for compounds 5 c and 46 by magnesium-halogen exchange with ethyl magnesium bromide followed by subsequent quenching with methanol. For comparison purposes, the corresponding 5-proto derivatives were also prepared through CuAAC from 70 and the requisite azides. See the Supporting Information for experimental details.
    • The regiochemistry of the 5-halotriazole product was confirmed for compounds 5 c and 46 by magnesium-halogen exchange with ethyl magnesium bromide followed by subsequent quenching with methanol. For comparison purposes, the corresponding 5-proto derivatives were also prepared through CuAAC from 70 and the requisite azides. See the Supporting Information for experimental details.
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    • For examples of coordinatively unsaturated half-sandwich ruthenium(II) complexes, see
    • For examples of coordinatively unsaturated half-sandwich ruthenium(II) complexes, see


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.