Preparation of amine-boranes, including ammonia borane

Patent metadata

Field	Value
Publication number	US-2016101984-A1
Application number	US-201514879844-A
Country	US
Kind code	A1
Filing date	Oct 9, 2015
Priority date	Oct 9, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

Disclosed herein is a method for preparing amine-boranes.

First claim

1 . A method for preparing ammonia borane, comprising:
reacting a stoichiometric amount of sodium borohydride and twice the stoichiometric amount of ammonium salt in tetrahydrofuran (THF) at room temperature, the THF containing about 1% dissolved water.

2 . The method of claim 1 , the reaction is conducted at room temperature.

3 . A method for preparing amine-boranes, comprising:
reacting a stoichiometric amount of sodium borohydride with a stoichiometric amount of ammonium salt in refluxing THF in the presence of at least one corresponding amine.

4 . A method for preparing amine-boranes, comprising:
adding a solution of THF containing about a slight excess than stoichiometric amount of water to a mixture, the mixture comprising:
a slight excess than stoichiometric amount of sodium borohydride;
a corresponding amine; and
a slight excess than stoichiometric amount of sodium bicarbonate.

5 . The method of claim 4 , the reaction is conducted at room temperature.

6 . The method of claim 4 , the ratio of amine:sodium borohydride:sodium bicarbonate:water is 1:1.5:3:3.

Assignees

• Purdue Research Foundation

Inventors

• Ramachandran P Veeraraghavan
• Kulkarni Ameya Sanjay

Classifications

• C01B35/146 Primary

  Compounds containing boron and nitrogen, e.g. borazoles (ammonium tetrafluoborates C01B35/063; ammonium borates C01B35/12) · CPC title

• C07F5/027

  Organoboranes and organoborohydrides · CPC title