4972-32-1

Basic information

• Product Name: Benzenesulfinic acid, butyl ester
• CAS NO: 4972-32-1
• Molecular Formula: C10H14O2S
• Molecular Weight: 198.286
• Mol File: 4972-32-1.mol

Chemical Properties

• CAS DataBase Reference: Benzenesulfinic acid, butyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Benzenesulfinic acid, butyl ester(4972-32-1)
• EPA Substance Registry System: Benzenesulfinic acid, butyl ester(4972-32-1)

Safety Data

• Hazardous Substances Data: 4972-32-1(Hazardous Substances Data)

Upstream product

• 831-91-4 Benzyl phenyl sulfide 
• 71-36-3 butan-1-ol 
• 80-17-1 benzenesufonyl hydrazide 
• 108-98-5 thiophenol 
• 3406-03-9 2-(phenylsulfonyl)acetophenone 
• 98-09-9 benzenesulfonyl chloride 
• 39931-19-6 (butoxymethyl)piperidine 
• 4972-30-9 benzenesulfinic benzenesulfonic anhydride 

Downstream Products

• 54491-43-9 3-phenylthioindole 

Relevant articles and documents

NaHSO3-Mediated Direct Synthesis of Sulfinic Esters from Sulfonyl Hydrazides under Transition-Metal-Free Conditions

We have developed a protocol for the NaHSO3-promoted esterification of sulfonyl hydrazides with alcohols for the synthesis of sulfinic esters. Various sulfonyl hydrazides could be converted to the corresponding sulfinic esters in good to high yields. The merits of this protocol include mild transition-metal-free reaction conditions, an inexpensive and available reagent, and operational simplicity. Controlled experiments reveal that this transformation probably undergoes via a radical pathway. (Figure presented.).

Metal- And oxidant-free electrochemical synthesis of sulfinic esters from thiols and alcohols

An efficient and eco-friendly electrochemical synthesis of various sulfinic esters from thiols and alcohols via sequential S-H/S bond cleavage and double S-O bond formation under mild reaction conditions has been developed. Stoichiometric oxidants, metal catalysts, activating agents and even added bases were avoided in this method, and the only by-product generated from this reaction was dihydrogen gas which could serve as a green source of energy. Various functional groups are compatible with this green protocol which can be easily conducted on a gram-scale.

Copper-Catalyzed Oxidative Reaction of β-Keto Sulfones with Alcohols via C?S Bond Cleavage: Reaction Development and Mechanism Study

A Cu-catalyzed cascade oxidative radical process of β-keto sulfones with alcohols has been achieved by using oxygen as an oxidant. In this reaction, β-keto sulfones were converted into sulfinate esters under the oxidative conditions via cleavage of C?S bond. Experimental and computational studies demonstrate that a new pathway is involved in this reaction, which proceeds through the formation of the key four-coordinated CuII intermediate, O?O bond homolysis induced C?S bond cleavage and Cu-catalyzed esterification to form the final products. This reaction provides a new strategy to sulfonate esters and enriches the research content of C?S bond cleavage and transformations.

Reactions of benzyl aryl sulfides with excess active halogen reagents

1,2,3-Tribromopyrrolo[1,2-b][1,2]benzothiazin-10-one (2) is produced from 2-[2-(benzylthio)benzoyl]-pyrrole (1) when treated with excess (5 equiv) NBS in CHCl3. With NCS, a mixture is obtained in which di- and trichloropyrrolo[1,2-b][1,2]benzothiazin-10-ones are present. If ethanol is present in the NCS reaction, compound 4 is formed as the major product. Further, compound 3 is also formed by the reaction of compound 1 or the corresponding disulfide with excess SOCl2. A novel route to alkyl arenesulfinic esters is also reported. Treatment of a benzyl aryl sulfide with excess (5 equiv) NCS in the presence of an n-alkyl alcohol (7 equiv) produces an n-alkyl arenesulfinic ester in good yield. An arenesulfonyl chloride is the major product in the presence of benzyl alcohol.