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Volumn 36, Issue 1, 2007, Pages 82-83

Regio- and stereoselective ring opening of epoxides and aziridines using zirconyl chloride: An efficient approach for the synthesis of β-chlorohydrins and β-chloroamines

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EID: 34247184222     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2007.82     Document Type: Article
Times cited : (19)

References (37)
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    • Kemp, J.E.G.1
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    • Inorganic Chemistry
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    • (1990) Roger and Harper
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  • 37
    • 34247281565 scopus 로고    scopus 로고
    • General experimental procedure: To a solution of an epoxide or W-tosylaziridine (1mmol) in MeCN (5 mL) ZrOCl2 (1.2 mmol) was added and the mixture was stirred at room temperature. After completion of the reaction (TLC) the mixture was diluted with EtOAc (10 mL) followed by washing with brine (20 mL) and water (2 × 10 mL, The organic portion was dried and concentrated. The crude material was purified by column chromatography (silica gel, hexane-EtOAc) to furnish pure β-chlorohydrin or N-tosyl-β-chloroamine. The spectral (IR, 1HNMR and MS) and analytical data of some representative products are given below. Product 2a: 1H NMR (CDCl3, 200 MHz, δ 7.40-7.28 (5H, m, 4.89 (1H, t, J, 7.0Hz, 3.88-3.76 (2H, m, 2.83 (1H, brs, FABMS: m/z 159, 157 [M, H]+̇, Anal. Calcd for C8H9ClO: C, 61.34; H, 5.75, Found: C, 61.46; H, 5.64, Product 2g: 1HNMR CDCl3
    • 2S: C, 54.26; H, 6.26; N, 4.87%. Found: C, 54.38; H, 6.32; N, 4.81%.


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