Citation: Mohammadali Bigdeli. Clean synthesis of 1,8-dioxooctahydroxanthenes promoted by DABCO-bromine in aqueous media[J]. Chinese Chemical Letters, ;2010, 21(10): 1180-1182. doi: 10.1016/j.cclet.2010.05.018 shu

Clean synthesis of 1,8-dioxooctahydroxanthenes promoted by DABCO-bromine in aqueous media

Mohammadali Bigdeli

Faculty of Chemistry, Tarbiat Moallem University, No. 49, Mofateh Ave., Tehran, Iran

Received Date: 24 February 2010

Fund Project: We wish to thank Teacher Training University for supporting this work.

An efficient procedure is reported for the synthesis of 3, 3, 6, 6-tetramethyl-9-aryl-1, 8-dioxooctahydroxanthenes using a one-pot condensation of arylaldehydes and 5, 5-dimethyl-1, 3-cyclohexandione in the presence of DABCO-bromine (TDB) as an acid catalyst. To the best of our knowledge this is the first time that DABCO-bromine is used as an acid catalyst in aqueous media for this type of reaction. This method provides several advantages such as use of water as solvent, easy and clean synthesis, simple work up and versatility.
- 1,4-Diazabicyclo[2,2,2]octane,
- (DABCO)-bromine,
- Oetahydroxyxanthene,
- Aqueous media,
- Arylaldehyde,
- Dimedone
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