A novel and short synthesis of (1,4/2)-cyclohex-5-ene-triol and its conversion to (+/-)-proto-quercitol


Gultekin M., Salamci E., Balci M.

CARBOHYDRATE RESEARCH, vol.338, no.16, pp.1615-1619, 2003 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 338 Issue: 16
  • Publication Date: 2003
  • Doi Number: 10.1016/s0008-6215(03)00256-8
  • Title of Journal : CARBOHYDRATE RESEARCH
  • Page Numbers: pp.1615-1619

Abstract

(1,4/2)-Cyclohex-5-ene-triol was synthesized starting from cyclohexa-1,4-diene with two different approaches. Photooxygenation of cyclohexa-1,4-diene and epoxy-cyclohexene afforded anti-2,3-dioxabicyclo[2.2.2]oct-7-en-5-yl hydroperoxide and anti-7-oxabicclo[4.1.0]hept-4-en-3-yl hydroperoxide, respectively. Hydroperoxy endoperoxide was reduced with aqueous sodium bisulfite; hydroperoxy-epoxide with dimethylsulfide-titanium tetraisopropoxide to give 7-oxabicyclo[4.1.0]hept-4-en-3-ol. Acidic hydrolysis of the epoxy-alcohol gave the (1,4/2)-cyclohex-3-ene-triol. Oxidation of the double bond with KMnO4 resulted in the formation of proto-quercitol. (C) 2003 Elsevier Ltd. All rights reserved.