Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: MITSUNOBU REACTION WITH PRIMARY AMIDES
Aarnav
Harmless
*




Posts: 3
Registered: 16-11-2016
Member Is Offline

Mood: No Mood

[*] posted on 16-11-2016 at 09:19
MITSUNOBU REACTION WITH PRIMARY AMIDES


Can we do MITSUNOBU reaction of a primary aliphatic amide and an alcohol
Ex:n-butylamide
View user's profile View All Posts By User
clearly_not_atara
International Hazard
*****




Posts: 2788
Registered: 3-11-2013
Member Is Offline

Mood: Big

[*] posted on 16-11-2016 at 17:28


The Mitsunobu reaction depends on the triphenylphosphine/diazo complex deprotonating the target nucleophile; I doubt that n-butylamide will be deprotonated. If you use an amide instead it probably will not attack the alkoxyphosphonium intermediate.
View user's profile View All Posts By User
CuReUS
National Hazard
****




Posts: 928
Registered: 9-9-2014
Member Is Offline

Mood: No Mood

[*] posted on 17-11-2016 at 02:45


according to wiki,for the mitsunobu reaction to work,the nucleophile must have a pKa less than 15.For comparison,the pKa of acetamide is 16.5.
this paper might help you get what you want-https://www.thieme-connect.de/DOI/DOI?10.1055/s-0033-1340142



View user's profile View All Posts By User
Nicodem
Super Moderator
Thread Moved
17-11-2016 at 08:20
Aarnav
Harmless
*




Posts: 3
Registered: 16-11-2016
Member Is Offline

Mood: No Mood

[*] posted on 17-11-2016 at 09:04


Thanks
View user's profile View All Posts By User

  Go To Top