Unraveling the Mysteries of Dimethylthiocarbamoyl Chloride: Structure

Dimethylthiocarbamoyl chloride is a significant organic compound, and understanding its main structural features is crucial for comprehending its properties and applications. This article aims to explore the primary structural features of dimethylthiocarbamoyl chloride. By analyzing its structural characteristics in depth, we can better understand the properties and reaction tendencies of this compound, providing a theoretical basis for its applications in various fields.

Dimethylthiocarbamoyl Chloride:

Dimethylthiocarbamoyl chloride is an organic sulfur compound with the chemical formula (CH3)2NC(S)Cl. It is a yellow solid, often referred to as yellow syrup. It serves as a key reagent in the Newman-Kwart rearrangement synthesis of arylthiols. As a representative of other thiocarbonyl chlorides, dimethylthiocarbamoyl chloride exhibits electrophilicity and serves as a source of R2NC(S)+. It is analogous to dimethylaminobenzoyl chloride (R2NC(O)Cl). Dimethylthiocarbamoyl chloride is prepared by chlorination of the relevant tetramethylthiourea disulfide.

What is the Structure of Dimethylthiocarbamoyl Chloride?

Dimethylthiocarbamoyl chloride is an organic sulfur compound with the molecular formula (CH3)2NC(S)Cl.

- (CH3)2: Represents two methyl groups (CH3) bonded to the central nitrogen atom (N).

- NC(S)Cl: This part of the molecule consists of a carbon (C) atom forming a double bond with sulfur (S), and a single bond with nitrogen (N). Another chlorine atom (Cl) is also bonded to carbon with a single bond.

Essentially, the molecule has a central carbon atom bonded to a chlorine atom, a sulfur atom, and a nitrogen atom, with the nitrogen atom connected to two methyl groups.

Functional Group Explanation of Dimethylthiocarbamoyl Chloride:

Dimethylthiocarbamoyl chloride can be explained based on three key functional groups:

- Dimethylamine (tertiary amine): (CH3)3N- This functional group consists of a central nitrogen atom and two methyl groups (CH3). The characteristic of tertiary amines is the presence of an alkyl group attached to the nitrogen atom.

- Thiocarbonyl (C=S): This group is derived from the carbonyl (C=O), where the oxygen atom (O) is replaced by a sulfur atom (S). The double bond between carbon and sulfur represents this functional group.

- Acyl Chloride (C-Cl): This functional group represents the acyl (C=O), where the hydroxyl oxygen (OH) is replaced by a chlorine atom (Cl). The single bond between carbon and chlorine represents this group.

Safety Data Sheet (SDS) of Dimethylthiocarbamoyl Chloride:

SDS provides information about the potential hazards of chemicals, how to handle chemicals safely, and what to do in case of accidents. It is essential to read the SDS before using any chemicals. You can find the Safety Data Sheet (SDS) of dimethylthiocarbamoyl chloride from various chemical suppliers. Here are some important contents of the Safety Data Sheet of dimethylthiocarbamoyl chloride:

Precautions:

- Thoroughly wash face, hands, and any exposed skin after handling.

- Do not eat, drink, or smoke when using this product.

- Avoid inhalation of dust/fume/gas/mist/vapors/spray.

- Wear protective gloves/clothing/eye/face protection.

- Contaminated work clothing should not be allowed out of the workplace.

- Use only outdoors or in a well-ventilated area.

First Aid Measures:

- Eye Contact: Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. If eye irritation persists, seek medical advice.

- Skin Contact: Immediately wash with plenty of water for at least 15 minutes. Seek medical attention directly.

- Inhalation: Move to fresh air. If breathing is difficult, give oxygen. If the victim ingests or inhales the substance, do not use mouth-to-mouth method; use appropriate respiratory medical equipment for artificial respiration. Seek immediate medical attention.

- Ingestion: Do not induce vomiting. Immediately call a poison center or doctor.

Handling and Storage:

- Handling: Wear personal protective equipment/face protection. Do not enter eyes, skin, or clothing. Use only in a chemical fume hood. Do not eat. If swallowed, seek medical attention immediately. Do not breathe (dust/fume/vapors/mist). Avoid dust formation. Keep away from water.

- Storage: In the corrosion area. Keep container tightly closed. Keep away from heat, sparks, and open flames. Avoid contact with water, keep container sealed, store in a dry, cool, well-ventilated place. Keep away from water or moist air, incompatible materials, water, strong oxidants, alcohols, amines.

Structure of Dimethylthiocarbamoyl Chloride:

Dimethylthiocarbamoyl chloride is an important reagent used in the synthesis of various compounds in organic synthesis. Here are some of its applications:

- Synthesis of Arylthiols:

Arylthiols are organic compounds with thiol groups (-SH) on aromatic rings. Dimethylthiocarbamoyl chloride serves as a key reagent in the Newman-Kwart rearrangement synthesis of arylthiols. In this rearrangement, dimethylthioamino acts as a leaving group, while the thiol group is introduced onto the aromatic ring.

- Chemical Selective Deoxygenation:

Dimethylthiocarbamoyl chloride can be used for the chemical selective deoxygenation of pyridine N-oxides. Pyridine N-oxides are a class of heterocyclic compounds with nitrogen atoms bonded to oxygen atoms. The deoxygenation reaction removes the oxygen atom from the pyridine ring while preserving other functional groups.

Conclusion

In summary, dimethylthiocarbamoyl chloride, as a significant organic compound, is characterized by the double bond between sulfur and nitrogen atoms and the substituent chlorine atom. These structural features confer unique properties and reactivity to the compound, rendering it with broad potential applications in organic synthesis, catalysis, and pharmaceuticals. By delving into the structural features of dimethylthiocarbamoyl chloride, we can better grasp its chemical behavior and performance characteristics, providing valuable references for further research and applications. Hopefully, this article will help readers gain a more comprehensive understanding of the main structural features of dimethylthiocarbamoyl chloride and inspire deeper exploration and research into this compound.

References:

[1] https://www.researchgate.net/publication/250470504_Deoxygenation_of_Pyridine_N-Oxides_with_Dimethylthiocarbamoyl_Chloride

[2] https://patents.google.com/patent/EP0355578A1/en

[3] https://en.wikipedia.org/wiki/Dimethylthiocarbamoyl_chloride

[4] https://www.trc-canada.com/prod-img/MSDS/D479545MSDS.pdf

[5] https://www.fishersci.com/store/msds?partNumber=AC408610250&countryCode=US&language=en