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1,1,3,3 Tetramethylguanidine

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Density  918 kg/m³
Appearance  Colourless liquid
1,1,3,3-Tetramethylguanidine wwwsigmaaldrichcomcontentdamsigmaaldrichstr
Related compounds  Dimethylurea Noxytiolin Metformin Allantoic acid Carmustine

Tetramethylguanidine is an organic compound with the formula HNC(N(CH3)2)2. This colourless liquid is a strong base with a higher pKa than typical amines.

It was originally prepared from tetramethylthiourea via S-methylation and amination, but alternative methods start from cyanogen iodide.

Uses

TMG is mainly used as a strong, non-nucleophilic base for alkylations, often as a substitute for the more expensive bases DBU and DBN. Since it is highly water-soluble, it is easily removed from mixtures in organic solvents. It is also used as a base-catalyst in the production of polyurethane.

References

1,1,3,3-Tetramethylguanidine Wikipedia


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