Synthesis methods for amino(halo)silanes

Patent metadata

Field	Value
Publication number	US-9701695-B1
Application number	US-201514985006-A
Country	US
Kind code	B1
Filing date	Dec 30, 2015
Priority date	Dec 30, 2015
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

Disclosed are methods of synthesizing an amino(halo)silane comprising the step of reacting a halosilane having the formula Si a H b X c with an aminosilane having the formula Si d H e (NR 1 R 2 ) f to produce the amino(halo)silane having the formula Si w H x X y (NR 1 R 2 ) z , wherein X=Br or I; each R 1 and R 2 is independently selected from a C 1 -C 10 alkyl, aryl, or hetero group; a, d, and w independently=1 to 4; b+c=2a+2; b=1 to 2a+1; c=1 to 2a+1; e+f=2d+2; e=1 to 2d+1; f=1 to 2d+1; x+y+z=2w+2; and R 1 and R 2 may be joined to form a nitrogen-containing heterocycle.

First claim

What is claimed is:

1. A method of synthesizing an aminohalosilane, the method comprising reacting a halosilane having the formula
Si a H b X c

with an aminosilane having the formula
Si d H e (NR 1 R 2 ) f

to produce the aminohalosilane reaction product having the formula:
Si w H x X y (NR 1 R 2 ) z

wherein X=Br or I; each R 1 and R 2 independently selected from a C 1 -C 10 alkyl, aryl, or hetero group; a, d, and w=1 to 4; b+c=2a+2; b=1 to 2a+1; c=1 to 2a+1; e+f=2d+2; e=1 to 2d+1; f=1 to 2d+1; x+y+z=2w+2; x=1 to 2w; y=1 to 2w; z=1 to 2w; and R 1 and R 2 may be joined to form a nitrogen-containing heterocycle.

2. The method of claim 1 , wherein a molar ratio of the halosilane and the aminosilane ranges from approximately 10:1 to 1:10.

3. The method of claim 1 , further comprising isolating the aminohalosilane reaction product from a crude product produced by the reaction.

4. The method of claim 1 , further comprising distilling the aminohalosilane reaction product.

5. The method of claim 1 , further comprising subliming the aminohalosilane reaction product.

6. The method of claim 1 , wherein X=I.

7. The method of claim 6 , wherein the halosilane is SiH 2 I 2 .

8. The method of claim 1 , wherein X=Br.

9. The method of claim 8 , wherein the halosilane is SiH 2 Br 2 .

10. The method of claim 1 , wherein a=d and b=e.

11. The method of claim 10 , wherein the method produces a single aminohalosilane reaction product and no byproducts.

12. The method of claim 1 , wherein the reaction is performed in a solvent.

13. The method of claim 1 , wherein the reaction does not utilize a solvent.

14. A method of synthesizing an aminohalosilane comprising the steps of:
adding a dibromosilane or diiodosilane to a reactor;
adding an aminosilane having the formula Si d H e (NR 1 R 2 ) f to the reactor to produce a mixture, wherein each R 1 and R 2 independently selected from a C 1 -C 10 alkyl, aryl, or hetero group; d=1 to 4; e+f=2d+2; e=1 to 2d+1; and f=1 to 2d+1;
stirring the mixture to form a stirred mixture; and
isolating the aminohalosilane from the stirred mixture.

15. The method of claim 14 , wherein d=1 and e=2.

16. The method of claim 15 , wherein the method produces a single aminohalosilane reaction product and no byproducts.

17. The method of claim 14 , wherein the reaction is performed in a solvent.

18. The method of claim 14 , wherein the reaction does not utilize a solvent.

19. The method of claim 14 , further comprising distilling the aminohalosilane reaction product.

20. The method of claim 14 , further comprising subliming the aminohalosilane reaction product.

Assignees

• Air Liquide American

Inventors

• Kuchenbeiser Glenn
• Pallem Venkateswara R
• Husson Guillaume

Classifications

• C07F7/123 Primary

  by reactions involving the formation of Si-halogen linkages · CPC title

• C07F7/12

  Organo silicon halides · CPC title

• C07F7/025 Primary

  without C-silicon linkages · CPC title