5769-15-3

Basic information

• Product Name: 4-Chlorobenzenesulfonyl isocyanate
• Synonyms: 4-CHLOROBENZENESULPHONYL ISOCYANATE;4-CHLOROBENZENSULFONYL ISOCYANATE;4-CHLOROBENZENESULFONYL ISOCYANATE;P-CHLOROBENZENESULFONYL ISOCYANATE;4-CHLOROBENZENESULFONYL ISOCYANATE, TEC&;4-Chlorobenzenesulfonylisocyanate,97%;4-CHLOROBENZENESULFONYL ISOCYANATE 97%;(4-Chlorophenylsulfonyl) isocyanate
• CAS NO: 5769-15-3
• Molecular Formula: C₇H₄ClNO₃S
• Molecular Weight: 217.63
• Product Categories: Isocyanates;Nitrogen Compounds;Organic Building Blocks
• Mol File: 5769-15-3.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 121 °C0.5 mm Hg(lit.)
• Flash Point: >230 °F
• Appearance: /
• Density: 1.457 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.000237mmHg at 25°C
• Refractive Index: n20/D 1.558(lit.)
• Storage Temp.: Refrigerator (+4°C) + Flammables area
• Sensitive: Moisture Sensitive
• BRN: 516520
• CAS DataBase Reference: 4-Chlorobenzenesulfonyl isocyanate(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Chlorobenzenesulfonyl isocyanate(5769-15-3)
• EPA Substance Registry System: 4-Chlorobenzenesulfonyl isocyanate(5769-15-3)

Safety Data

• Hazard Codes: C
• Statements: 20/21/22-34-10
• Safety Statements: 26-27-36/37/39-45-25-16
• RIDADR: UN 3265 8/PG 1
• WGK Germany: 3
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 5769-15-3(Hazardous Substances Data)

Usage

Chemical Properties

clear colorless liquid

Uses

Different sources of media describe the Uses of 5769-15-3 differently. You can refer to the following data:
1. 4-Chlorobenzenesulfonyl isocyanate is a useful intermediate for organic synthesis and other chemical processes.
2. 4-Chlorobenzenesulfonyl isocyanate may be used as starting reagent in the synthesis of 2-chloroethyl 4-chlorobenzenesulfonyl carbamate and 1-chloro-2-propyl 4-chlorobenzenesulfonyl carbamate.

General Description

4-Chlorobenzenesulfonyl isocyanate is an isocyanate derivative.

InChI:InChI=1/C7H4ClNO3S/c8-6-1-3-7(4-2-6)13(11,12)9-5-10/h1-4H

Upstream product

• 75-44-5 phosgene 
• 98-64-6 4-Chlorobenzenesulfonamide 
• 94-20-2 chlorpropamide 
• 1189-71-5 isocyanate de chlorosulfonyle 
• 14064-15-4 (4-chlorophenyl)trimethylstannane 
• 201230-82-2 carbon monoxide 
• 149552-42-1 [N-(p-chlorophenylsulfonyl)imino]phenyliodinane 
• 111-36-4 n-butyl isocyanide 

Downstream Products

• 31593-65-4 C₁₅H₁₄ClNO₄S 
• 31662-23-4 C₂₁H₂₆ClNO₄S 
• 31593-66-5 C₁₉H₂₂ClNO₄S 
• 31593-67-6 C₂₅H₃₄ClNO₄S 
• 31662-24-5 C₁₃H₈Br₂ClNO₄S 
• 31662-25-6 C₁₃H₇Br₃ClNO₄S 
• 1028280-79-6 N-4-toluenesulfonylureido-N-4-nitrobenzylglycine 
• 273732-30-2 C₂₂H₁₉ClN₄O₉S₂ 
• 273732-25-5 C₂₂H₁₉ClN₄O₉S₂ 
• 294200-84-3 C₂₃H₂₁ClN₄O₉S₂ 
• 294200-89-8 C₂₃H₂₁ClN₄O₉S₂ 

Relevant articles and documents

Production process for improving quality of sulfonyl isocyanate

The invention discloses a production process for improving the quality of sulfonyl isocyanate. The production process comprises the steps of mixing a sulfanilamide raw material and xylene according toa certain ratio to form a sulfanilamide solution, adding a certain amount of xylene into a synthesis kettle, heating, controlling the temperature at 110 to 115 DEG C, adding the sulfanilamide solution into the synthesis kettle through a transfer pump at a certain rate; dropwise adding a catalyst and introducing gaseous phosgene at the same time, paying attention to that the catalyst must be dropwise added 2 hours before the sulfanilamide solution is well converted, reducing the phosgene flow until the process requirement cumulant is reached, transferring a product into a light breaking kettleafter heat preservation is performed for 2 hours, removing redundant phosgene by using nitrogen, and finally obtaining a finished product after qualified sampling and analyzing. According to the invention, the synthesis system of sulfonyl isocyanate is optimized, the yield of sulfonyl isocyanate is improved, and meanwhile, the synthesized tail gas and the gas-driving tail gas are innovatively condensed by a condenser and then flow back to the synthesis kettle, so that the tail gas is recycled, and the reaction rate and content of the product are improved.

Mild and Efficient Synthesis of Aromatic Sulfonamides by in situ Preparation of the Corresponding Sulfonyl Isothiocyanates

A new reaction between chlorosulfonyl isocyanate (1) and trialkylstannyl-substituted arenes 2a-k, 7, 9 is described.It provides the aromatic sulfonyl isocyanates 3 or their derivatives, the sulfonamides 4a-j, the sulfonylcarbamates 5a-b, or sulfonylureas 6, respectively.The trialkylstannyl group as an efficient leaving group allows mild reaction conditions to be applied and unusual substitution patterns to be obtained, normally not accessible by electrophilic aromatic substitutions.Thus, sulfonamidation can be achieved in meta position to a trifluoromethyl group. Key words: Electrophilic aromatic substitution; sulfodestannalytion; isocyanates, sulfonyl, aromatic; sulfonyl compounds; trialkylarylstannanes, application of