Cu(Ⅰ)-Catalyzed Synthesis of 2,3-Dihydro-1,4-Benzodioxins

Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (2): 0-0.

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Cu(Ⅰ)-Catalyzed Synthesis of 2,3-Dihydro-1,4-Benzodioxins

SHI Lanxiang(),ZHANG Baohua

College of Chemical Engineering,Shijiazhuang University,Shijiazhaung 050035,China

Received:2015-07-06 Published:2016-02-01 Online:2016-02-01
Contact: SHI Lanxiang
Supported by:
Supported by Hebei Province Science and Technology Support Project(No.15226601D), Shijiazhuang University Platform Funds(No.XJPT007)

Abstract

Abstract:

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.

Key words: dihydro-benzodioxin, o-iodophenol, epoxide, triazonane derivative

SHI Lanxiang, ZHANG Baohua. Cu(Ⅰ)-Catalyzed Synthesis of 2,3-Dihydro-1,4-Benzodioxins[J]. Chinese Journal of Applied Chemistry, 2016, 33(2): 0-0.

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Cu(Ⅰ)-Catalyzed Synthesis of 2,3-Dihydro-1,4-Benzodioxins

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