CHEM 2323 Study Guide - Midterm Guide: Hexavalent Chromium, Carboxylic Acid, Primary Alcohol
Document Summary
Ch 11 deals with reactions involving alcohol or alcohol derivatives as the starting material. Keep in mind the different reactions you have learned in o. chem 1 on how to form alcohols (see ch 10 chart). An alcohol can react with various chromium vi oxidation reagents, such as cro3, Na2cr2o7, h2cro4, which will oxidize the alcohol to form a carbonyl group. A secondary alcohol will first react with the chromic acid to form a chromate ester. Water will then attack the chromate ester, displacing the chromium and forming a ketone, with cr(iv) as a byproduct. However, when a primary alcohol reacts with chromium, chromium will continue to oxidize the aldehyde into a carboxylic acid (similar to kmno4 in extreme conditions) Reagent a chromium (vi) reagent (na2cr2o7, or. Product an carbonyl group (if 2nd, will form a ketone, if 1st, will further oxidize to a carboxylic acid) note.
