E1 AND FRACTIONAL DISTILLATION 2011 SPRING

E1 AND FRACTIONAL - E1 Unimolecular Elimination Fractional Distillation Laboratory 7 SN1 vs E1(SN2 vs E2 1 SN1 vs E1 E1 mechanism 2 SN1 and E1

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
4/27/11 1 E1: Unimolecular Elimination Fractional Distillation Laboratory 7 S N 1 vs E1 (S N 2 vs E2)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4/27/11 2 S N 1 vs E1 E1 mechanism
Background image of page 2
4/27/11 3 S N 1 and E1 pathways often compete E1 Elimination S N 1 Substitution Zaitsev’s rule More substituted bonds are more stable
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4/27/11 4 Procedure Fractionally distill cyclohexene as it is formed Dry product over K 2 CO 3 Purify cyclohexene via simple distillation Dry again, if necessary Test for unsaturation with Baeyer test Fractional distillation Clip hoses with metal clip Don’t use plastic connector on pot flask Insulate the pot flask, fractionation column and distillation head
Background image of page 4
5 Baeyer test for unsaturation Appearance of brown solid indicates a positive test for unsaturation However, a significant difference in the number of drops required for color persistence is also a positive test result Tips and tricks Wrap distillation pot and column in aluminum foil Do not wrap foil around Keck clamps Keck clamps melt! Use phosphoric acid with care
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/27/2011 for the course CHEM 233 taught by Professor Staff during the Spring '08 term at University of Illinois, Urbana Champaign.

Page1 / 9

E1 AND FRACTIONAL - E1 Unimolecular Elimination Fractional Distillation Laboratory 7 SN1 vs E1(SN2 vs E2 1 SN1 vs E1 E1 mechanism 2 SN1 and E1

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online