From: Badru Nsubuga (bdnsubuga$##$yahoo.co.uk)
Date: Wed Sep 11 2002 - 17:55:39 EDT
Using 2 eq of sulfuric acid gave excellent yield of
vanilic acid ethyl ester after cooking for 16 hours.
I was also able to make syringic acid ethyl ester
using the the same trick. Thanks .
Badru
Jim Mitchell <j_mitchell$##$cerilliant.com> wrote: > You
should try 2eq of H2SO4 and reflux overnight,
> that should do the trick.
>
> Jim Mitchell
> Cerilliant Corporation
>
> -----Original Message-----
> From: Badru Nsubuga [SMTP:bdnsubuga$##$yahoo.co.uk]
> Sent: Saturday, September 07, 2002 5:10 PM
> To: everybody$##$orglist.net
> Subject: ORGLIST:An esterification that will not
> proceed!
>
>
> Reaction of 4-hydroxy-3-methoxybenzoic acid
> (vanillic
> acid, VA) with absolute ethanol in the presence of
> catalytic amounts of sulfuric acid, will not produce
> enough ethyl-4-hydroxy-3-methoxybenzoate! Does
> anyone
> know why? What is the pKa of VA?
>
> Save me that trip to the library! Thanks.
>
> Badru
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Finance - Get real-time stock quotes
> http://finance.yahoo.com
> _______________________________________________
> ORGLIST - Organic Chemistry Mailing List
> Website / Archive / FAQ: http://www.orglist.net
> To post a message (TO EVERYBODY) send to
> everybody$##$orglist.net
> To unsubscribe, send to
> everybody-request$##$orglist.net the message:
> unsubscribe your_orglist_password your_address
> List coordinator: Joao Aires de Sousa
> (coordinator$##$orglist.net)
>
> _______________________________________________
> ORGLIST - Organic Chemistry Mailing List
> Website / Archive / FAQ: http://www.orglist.net
> To post a message (TO EVERYBODY) send to
> everybody$##$orglist.net
> To unsubscribe, send to
> everybody-request$##$orglist.net the message:
> unsubscribe your_orglist_password your_address
> List coordinator: Joao Aires de Sousa
(coordinator$##$orglist.net)
__________________________________________________
Do You Yahoo!?
Everything you'll ever need on one web page
from News and Sport to Email and Music Charts
http://uk.my.yahoo.com
_______________________________________________
ORGLIST - Organic Chemistry Mailing List
Website / Archive / FAQ: http://www.orglist.net
To post a message (TO EVERYBODY) send to everybody$##$orglist.net
To unsubscribe, send to everybody-request$##$orglist.net the message: unsubscribe your_orglist_password your_address
List coordinator: Joao Aires de Sousa (coordinator$##$orglist.net)
This archive was generated by hypermail 2.1.4 : Fri Sep 19 2003 - 12:16:54 EDT