N-Tosyl-3-pyrrolecarboxylic acid - Names and Identifiers
N-Tosyl-3-pyrrolecarboxylic acid - Physico-chemical Properties
Molecular Formula | C12H11NO4S
|
Molar Mass | 265.29 |
Density | 1.3219 (rough estimate) |
Melting Point | 202-206 °C |
Boling Point | 360°C (rough estimate) |
Flash Point | 257.3°C |
Vapor Presure | 6.86E-11mmHg at 25°C |
pKa | 4.34±0.10(Predicted) |
Storage Condition | 2-8℃ |
Refractive Index | 1.4950 (estimate) |
N-Tosyl-3-pyrrolecarboxylic acid - Risk and Safety
Safety Description | 24/25 - Avoid contact with skin and eyes.
|
N-Tosyl-3-pyrrolecarboxylic acid - Introduction
N-p-toluenesulfonyl-3-pyrrolecarboxylic acid is an organic compound often abbreviated as PTSA. Here is some information about the nature, use, formulation and safety of PTSA:
1. nature:
PTSA is a white crystalline solid with strong acidity. It has good solubility in water and can form a stable acid solution. Its chemical structure contains benzenesulfonyl and pyrroloformic acid groups.
2. use:
PTSA is often used as an acid catalyst in organic synthesis reactions. It can be used in esterification, condensation, cyclization, ketone synthesis and other reactions to improve the reaction rate and yield. In addition, PTSA can also be used in the dye industry, paint industry and cosmetics industry.
3. Preparation method:
PTSA can be obtained by reacting p-toluenesulfonyl chloride with 3-pyrrolecarboxylic acid. First, an excess of phosphorus trichloride is added in an organic solvent, such as methylene chloride or xylene. Subsequently, 3-pyrrolecarboxylic acid was dissolved in the same organic solvent, and p-toluenesulfonyl chloride was added dropwise at low temperature. Finally, the reaction mixture is subjected to a reaction time, often several hours, after which PTSA can be obtained. After completion of the reaction, PTSA may be purified by filtration, crystallization, or the like.
4. Safety Information:
PTSA is a strong acid that is corrosive and irritating to the eyes, skin and respiratory system. Appropriate safety measures such as wearing protective gloves, goggles and respirators should be used when handling or storing PTSA. At the same time, it should avoid contact with strong alkali, oxidant and flammable materials to avoid violent reaction and fire accidents. When using and handling PTSA, closely follow workmanship and safety practices. Individuals are strictly prohibited from synthesizing PTSA outside of their own laboratory.
Last Update:2024-04-09 21:11:58