Caution Notice:
It has come to our notice that certain fraudulent individuals or entities are misusing our Company’s name and TCI’s registered trademarks by promoting and offering for sale regulated and hazardous chemical substances, including Potassium Cyanide, through online platforms like YouTube. We hereby categorically clarify that TCI has no association or connection whatsoever with the products being displayed or sold in these or similar videos. These products have been falsely represented as being associated with TCI, and the unauthorized use of our trademark and brand name is both illegal and misleading. TCI Chemicals is a responsible global organization committed to adhering to all applicable international and domestic regulatory frameworks. We do not manufacture, distribute, or engage in the sale of regulated chemical substances in India or in any other jurisdiction unless specifically authorized by the relevant laws and regulatory agencies. All our operations and offerings are governed by stringent safety, quality, and compliance protocols in accordance with applicable laws. Further, TCI Chemicals markets and sells its products exclusively through its official website and authorized distributors. We do not sell, endorse, or supply our products through any third-party platforms, unauthorized agents, or resellers. Any individual or organization purchasing products outside these official channels does so at their own risk, and TCI disclaims all responsibility and liability for any consequences arising therefrom. Members of the public, customers, and partners are strongly advised to exercise caution and conduct due diligence before engaging in any transactions involving products claiming association with TCI Chemicals. The official list of our authorized distributors is publicly available and may be accessed at: https://www.tcichemicals.com/IN/en/distributor/index. We are currently pursuing appropriate legal remedies against those misusing our brand, and we reserve all rights available to us under applicable intellectual property and criminal laws. If you become aware of any such fraudulent activity or require clarification, you may reach out to us at: Sales-IN@TCIchemicals.com. Your vigilance and cooperation are essential in safeguarding the public interest and protecting the integrity of the TCI brand.
Maximum quantity allowed is 999
TCI Practical Example: Synthesis of Primary Sulfonamides Using tBuONSO
We are proud to present the synthesis of the primary sulfonamide using tBuONSO and p-tolylmagnesium bromide. tBuONSO is a reagent for the synthesis of primary sulfonamides with organometallic reagents such as Grignard reagents and organolithium reagents.
-
Used Chemicals
-
Procedure
-
p-Tolylmagnesium bromide (ca. 1 mol/L, 4.4 mL, 4.4 mmol) was added to a solution of tBuONSO (400 mg, 2.96 mmol) in anhydrous THF (12 mL) at -78 °C and the mixture was stirred at the same temperature for 1 hour. The suspension was warmed to room temperature and stirred for overnight. After that, methanol (1 mL) was add to the reaction mixture and the solvent was removed under reduced pressure. The residue was purified by column chromatography (ethyl acetate:hexane = 0:1 - 1:4 on silica gel) to give 4-methylbenzenesulfonamide as a white solid (407 mg, 80%).
-
Experimenter’s Comments
-
The reaction mixture was monitored by UPLC.
-
Analytical Data
-
4-Methylbenzenesulfonamide
1H NMR (400 MHz, CDCl3); δ 7.70 (d, J = 8.4 Hz, 2H), 7.36 (d, J = 8.1 Hz, 2H), 7.27 (brs, 2H), 2.33 (s, 3H).
-
Lead Reference
-
- Primary Sulfonamide Synthesis Using the Sulfinylamine Reagent N‑Sulfinyl‑O‑(tert-butyl)hydroxylamine, t‑BuONSO