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A12902 Iodotrimethylsilane, 97%, stab. with copper

CAS Number
TMS iodide

Stock No. Size Price ($) Quantity Availability
A12902-06 5g 33.60
A12902-14 25g 90.70
A12902-22 100g 267.00
A12902-30 250g 630.00
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Iodotrimethylsilane, 97%, stab. with copper


Chemical Properties

Formula Weight
Boiling Point
Flash Point
Refractive Index
Storage & Sensitivity
Store at -20°C. Moisture Sensitive. Light Sensitive. Store under Nitrogen.
Miscible with water.


Iodotrimethylsilane is used for the introduction of trimethylsilyl group in organic synthesis. It is also useful for gas chromatography analysis by converting alcohol into a silyl ether derivative, thereby making it more volatile than the original molecule.


Moisture and light Sensitive. Incompatible withstrong acids, strong bases, strong oxidizing agents and reacts violently with water.

Literature References

Reactive silylating agent for conversion of ketones to silyl enol ethers (see Appendix 4). In triethylamine, the rate of silyl enol ether formation by TMS iodide is 7x109 times faster than with TMS chloride: Liebigs Ann. Chem., 1718 (1980). In combination with Hexamethyl­disilazane, A15139, unsymmetrical ketones give the thermodynamically more stable isomer: Synthesis, 730 (1979).

Valuable reagent for the mild cleavage of dialkyl and aralkyl ethers: J. Org. Chem., 42, 3761 (1977).

Alcohols are converted to alkyl iodides: Tetrahedron Lett., 2659 (1977). ɑɑ-Diaryl alcohols are reduced to the corresponding alkanes: Tetrahedron, 51, 11043 (1995); Synth. Commun., 26, 101 (1996).

Effective reagent for the O-alkyl cleavage of carboxylic esters: J. Am. Chem. Soc., 99, 968 (1977). The reaction can be catalyzed by iodine: J. Org. Chem., 44, 2185 (1979).

Catalyzes the transesterification of esters, even those of hindered acids: Synthesis, 142 (1981).

Alkyl carbamates are cleaved to amines, via the TMS esters: J. Chem. Soc., Chem. Commun., 315 (1978); for application to cleavage of N-Cbz and N-Boc groups, see: J. Chem. Soc., Chem. Commun., 495 (1979).

Catalyst for the protection of alcohols, under mild neutral conditions, as MOM ethers by trans-acetalization with Dimethoxymethane, A12055: Synthesis, 896 (1983), and as THP ethers by acetalization with dihydropyran: Synthesis, 703 (1985).

Catalyst for Michaelis-Arbuzov rearrangement of trivalent organophosphorus P-O-R compounds to the corresponding P=O derivatives, effective at lower temperatures than bromotrimethylsilane: Org. Lett., 5, 1661 (2003).

For reviews of the use of iodotrimethylsilane in organic synthesis, see: Synthesis, 861 (1980); Tetrahedron, 38, 2225 (1982); Adv. Silicon Chem., 1, 1 (1991).

Sato, A. H.; Ohashi, K.; Iwasawa, T. Regio-and stereospecific synthesis of (E)-alpha-iodoenamide moieties from ynamides through iodotrimethylsilane-mediated hydroiodation. Tetrahedron Lett. 2013, 54 (10), 1309-1311.

Sato, A. H.; Mihara, S.; Iwasawa, T. One-step synthesis of (1-iodovinyl) arenes from trimethylsilyl ethynylarene through iodotrimethylsilane-mediated hydroiodation. Tetrahedron Lett. 2012, 53 (28), 3585-3589.

GHS Hazard and Precautionary Statements

Hazard Statements: H225-H314-H335

Highly flammable liquid and vapour. Causes severe skin burns and eye damage. May cause respiratory irritation.

Precautionary Statements: P210-P233-P235-P240-P241-P242-P243-P260-P264b-P271-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P363-P370+P378q-P501c

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep container tightly closed. Keep cool. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

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