What are Better Coupling Reagents for Reacting an Amine with a Carboxylic Acid?

[gravenewworld]

I'm trying to find a coupling reagent for reacting an amine with a carboxylic acid. Currently I am using TBTU with fenchyl amine hydrochloride, but the amine seems not to want to react witht the carboxylic acid. Are there some better coupling reagents than TBTU out there that anyone knows of?

 

[movies]

Here's a whole list of them:

http://www.glschina.com/en/pro/peppro/cou.htm

They've got the CAS numbers listed there so you can cross-reference them to a chemical catalog.

I would say the ones I have seen the most often are CDI, HOBT, DCC, and EDCI.

 

[gravenewworld]

awesome thanks!

 

[thunderfvck]

I don't have anything to contribute to this thread, however you two dudes seem into this whole chemistry game.

Perhaps you'd be interested in the following forum:

http://www.sciencemadness.org/talk/