Citation:
SHI Lanxiang, ZHANG Baohua. Cu(Ⅰ)-Catalyzed Synthesis of 2,3-Dihydro-1,4-Benzodioxins[J]. Chinese Journal of Applied Chemistry,
;2016, 33(2): 144-148.
doi:
10.11944/j.issn.1000-0518.2016.02.150233
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2,3-Dihydro-1,4-benzodioxins were prepared through a tandem reaction of epoxides and o-iodophenols catalyzed by CuBr/1,4,7-trisubstituted-1,4,7-triazonane with K2CO3 as the base at 110℃. All aryl and aliphatic epoxides reacted with o-iodophenols smoothly with yields of 64%~83%. The relationship between yields and substituent groups was described and the possible mechanism was discussed. The compounds were confirmed by NMR and element analysis.
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Keywords:
- dihydro-benzodioxin,
- o-iodophenol,
- epoxide,
- triazonane derivative
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