About this Chemistry article
Highly efficient intramolecular cyclizations of 2′‐hydroxychalcones to 4‐chloro‐2 H ‐chromenes under vilsmeier conditions by Zhen‐Hua Li; Cun Zheng; Wei‐Ke Su is a Chemistry article available to read on EtoBox.
## Abstract magnified image Highly efficient intramolecular cyclization and of 2′‐hydroxychalcones to 4‐chloro‐2__H__‐chromenes under Vilsmeier conditions have been developed. In comparison with the reported methods, studies carried out indicate that Vilsmeier reagent generated __in situ__ from DMF and __bis__(trichloromethyl) carbonate (BTC) provides excellent chemselectivity, higher yields and avoids the formation of inorganic phosphorus salts.
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- Author
- Zhen‐Hua Li; Cun Zheng; Wei‐Ke Su
- Publisher
- Journal of Heterocyclic Chemistry; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley; FASEB (ISSN 0022-152X)
- Published
- 2008
- Language
- EN
- Field
- Chemistry (Physical Sciences)