Triethoxysilane → Tetraethoxysilane

HRID 2413367Notes

Reaction equation

HRID 2413367 reaction equation
[CH2:1]([O:3][SiH:4]([O:8][CH2:9][CH3:10])[O:5][CH2:6][CH3:7])[CH3:2].CN(C)[C:13](=[O:15])[O-].[CH3:17][NH2+]C>>[CH2:1]([O:3][Si:4]([O:15][CH2:13][CH3:17])([O:8][CH2:9][CH3:10])[O:5][CH2:6][CH3:7])[CH3:2]

Participants

3

Reactant 2

HCID 13830Triethoxysilane2×HCID 27249664137-10-4

Product 1

HCID 6517TetraethoxysilaneYield 22%

Conditions

Temperature
50 °C

Procedure

A round bottomed, three necked, 50 ml flask equipped with a magnetic stirring unit, thermometer and constant pressure addition funnel was flushed with argon. The flask was then charged with 7.8 gm (48 mmole) of triethoxysilane and 6.3 gm (48 mmole) of dimethylammonium dimethylcarbamate. The flask an its contents were heated with stirring under argon by means of a heating mantle to 50° C. As determined by glpc the triethoxysilane was consumed after three hours at 50° C. As determined by normalized area percent and retention times, the reaction produced 22% tetraethoxysilane, and 78% N,N-dimethylcarbamatotriethoxysilane. The reaction at room temperature produced the same two products in 31% and 69% yields respectively.

Workup

  1. customA round bottomed, three necked, 50 ml flask equipped with a magnetic stirring unit, thermometer and constant pressure addition funnel
  2. customwas flushed with argon
  3. temperatureThe flask an its contents were heated
  4. customwas consumed after three hours at 50° C

Sources & evidence

ORD record
ord-9374744a78384f03a1695b4b2ee2a859
Source dataset
uspto-grants-1985_01
Patent number
US04496754

Reaction notes

Loading…