OCR A AS Jun 2016 Paper 1 Q26

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26 Compound B, shown below, can be used to synthesise organic compounds with different functional groups. 22 CH3 CH3 H Compound B (a) (i) Compound B is a member of a homologous series. Name the homologous series and state its general formula. Homologous seriesGeneral formula[1] (ii) What reagents and conditions are needed to convert compound B into a saturated hydrocarbon?[1] (b) Some reactions involving compound B are shown in the flowchart below. Complete the flowchart, showing the structures of organic compounds C and D. concentrated H2SO4, heat CH3 CH3 H Compound B Compound C K2Cr2O7 / H2SO4 reflux polymerisation no reaction Compound D (repeat unit) [2]OCR 2016<br /> (c) The structure of compound F is shown below. 23 CH3 OH HO CH3 Compound F (i) What is the empirical formula of compound F?[1] (ii) A student plans a two-stage synthesis for preparing compound F from compound B. The synthesis first prepares compound E, as shown in the flowchart. Draw the structure of compound E in the box and state the reagents for each stage on the dotted lines. CH3 H CH3 Compound Bstage 1 Compound E stage 2CH3 OH HO CH3 Compound F [3] END OF QUESTION PAPEROCR 2016<br />

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