Turn on thread page Beta

need help on reaction equations and conditions watch

    • Thread Starter
    Offline

    0
    ReputationRep:
    how would you go from ch3ch2ch2mgi ------> ch3ch2ch2cooh
    what are the conditions?

    and

    ch3ch2mgbr ---> ch3ch2chohch3
    what is the reaciton equation and condition
    • Thread Starter
    Offline

    0
    ReputationRep:
    would the condtions be to have a dry ether
    Offline

    1
    ReputationRep:
    Right so the first one is a Grignard Reagent to butanoic acid, and the second is another Grignard reagent to an alcohol with another carbon atom. Let me think about it.

    --------------

    React CH3CH2CH2MgI with carbon dioxide to get CH3CH2CH2COOMgI

    Thats bubbled through ethoxyethane (dry ether yeah)

    Then hydrolyse it in the presence of dilute sulphuric acid to get:

    CH3CH2CH2COOMgI + H2O ===> CH3CH2CH2COOH + Mg(OH)I

    --------------

    Then for the second one, react CH3CH2MgBr with ethanal (CH3COH) to get what you want.

    Conditions: Let the Grignard reagent add across the C=O double bond, and then add dilute acid to hydrolyse it (giving the secondary alcohol)
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by olliemccowan)
    Right so the first one is a Grignard Reagent to butanoic acid, and the second is another Grignard reagent to an alcohol with another carbon atom. Let me think about it.

    --------------

    React CH3CH2CH2MgI with carbon dioxide to get CH3CH2CH2COOMgI

    Thats bubbled through ethoxyethane (dry ether yeah)

    Then hydrolyse it in the presence of dilute sulphuric acid to get:

    CH3CH2CH2COOMgI + H2O ===> CH3CH2CH2COOH + Mg(OH)I

    --------------

    Then for the second one, react CH3CH2MgBr with ethanal (CH3COH) to get what you want.

    Conditions: Let the Grignard reagent add across the C=O double bond, and then add dilute acid to hydrolyse it (giving the secondary alcohol)
    thanks soo much for all your help
    Offline

    1
    ReputationRep:
    (Original post by lil_kk)
    thanks soo much for all your help
    No worries, there's gotta be some use for my A-level in Chemistry lol.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: November 21, 2005

University open days

  • Heriot-Watt University
    School of Textiles and Design Undergraduate
    Fri, 16 Nov '18
  • University of Roehampton
    All departments Undergraduate
    Sat, 17 Nov '18
  • Edge Hill University
    Faculty of Health and Social Care Undergraduate
    Sat, 17 Nov '18
Poll
Have you ever experienced bullying?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.