Sodium Benzoate

Sodium Benzoate - Sodium Borohydride Reduction The Conversion of Benzophenone to Diphenylmethanol Tuesday 6-10 pm Introduction Benzophenone was

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Sodium Borohydride Reduction: The Conversion of Benzophenone to Diphenylmethanol Tuesday 6-10 pm November 13, 2007
Background image of page 1

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

View Full DocumentRight Arrow Icon
Introduction Benzophenone was converted to diphenylmethanol using sodium borohydride as the reducing agent. Recrystallization was performed to purity the product and a percent yield, melting point and IR were obtained. Theory, Reactions, and Mechanisms Like oxidation reactions, reduction reactions are one of the major classes of reactions in organic chemistry. A reduction reaction can be categorized by a gain of electrons from the loss of oxygen from a bond, the addition of hydrogen to a bond, or the replacement of a more electronegative atom with carbon or hydrogen. The addition of hydrogen across the bond is called catalytic hydrogenation. This method of reduction reduces most types of multiple bonds. A common catalyst involved in catalytic hydrogenation is platinum (see figure 1). Other catalysts, such as palladium and pyridine, are also used. Figure 1. Catalytic Hydrogenation with Platinum.
Background image of page 2
A more specific reduction involves hydride transfer reagents. These hydride transfer reagents act as hydride ion donors. A hydride is a hydrogen atom with a negative charge: H -1 . They contain at least one hydrogen atom that is bonded to another atom which is less electronegative then hydrogen. With a greater difference in electronegativity comes a more reactive reagent as a hydride donor. In order for these reactions to work, high temperature and pressure are needed. Two important reagents are sodium borohydride, NaBH 4 , and lithium aluminum hydride, LiAlH
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/16/2008 for the course CHEM 2990 taught by Professor N/a during the Spring '08 term at Pittsburgh.

Page1 / 8

Sodium Benzoate - Sodium Borohydride Reduction The Conversion of Benzophenone to Diphenylmethanol Tuesday 6-10 pm Introduction Benzophenone was

This preview shows document pages 1 - 4. Sign up to view the full document.

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