80404-54-2

Upstream product

• 623-47-2 propynoic acid ethyl ester 
• 882-33-7 diphenyldisulfane 
• 1212-08-4 S-Phenyl benzenethiosulfonate 
• 108-98-5 thiophenol 
• 931-59-9 benzenesulfenyl chloride 
• 133957-59-2 2-(trimethylsilyl)ethyl benzenesulfenate 
• 762-21-0 acetylenedicarboxylic acid diethyl ester 

Downstream Products

• 80404-53-1 ethyl β-(phenylsulfonyl)propiolate 
• 80404-59-7 3-Benzenesulfonyl-bicyclo[2.2.2]octa-2,5-diene-2-carboxylic acid ethyl ester 
• 80404-62-2 2-Benzenesulfonyl-6-methyl-benzoic acid ethyl ester 
• 80404-56-4 2-Benzenesulfonyl-6-methyl-cyclohexa-1,4-dienecarboxylic acid ethyl ester 
• 80404-57-5 3-Benzenesulfonyl-7-oxa-bicyclo[2.2.1]hepta-2,5-diene-2-carboxylic acid ethyl ester 
• 80404-58-6 6-Acetoxy-2-benzenesulfonyl-cyclohexa-1,4-dienecarboxylic acid ethyl ester 
• 80404-60-0 3-Benzenesulfonyl-7-methoxycarbonylamino-1,4-dimethyl-7-aza-bicyclo[2.2.1]hepta-2,5-diene-2-carboxylic acid ethyl ester 
• 1260001-50-0 4-ethyl 3-methyl 1-(4-nitrophenyl)-5-(phenylthio)-1H-pyrazole-3,4-dicarboxylate 
• 1260001-51-1 4-ethyl 3-methyl 1-(4-methoxyphenyl)-5-(phenylthio)-1H-pyrazole-3,4-dicarboxylate 
• 1260001-49-7 4-ethyl 3-methyl 1-phenyl-5-(phenylthio)-1H-pyrazole-3,4-dicarboxylate 

Relevant academic research and scientific papers

Palladium-Catalyzed Regio- and Stereoselective Coupling-Addition of Propiolates with Arylsulfonyl Hydrazides: A Pattern for Difunctionalization of Alkynes

A new pattern for difunctionalization of alkynes via a palladium-catalyzed regio- and stereoselective coupling-addition of propiolates with arylsulfonyl hydrazides is disclosed. The approach enables the synthesis of various highly functionalized (E)-vinylsulfones in satisfactory yields. Arylsulfonyl hydrazides act as both aryl and sulfonyl sources via selective cleavage of Ar(C)-S and S-N bonds, which are simultaneously incorporated onto the terminal carbon atom of an alkyne molecule.

A heterogeneous copper(I)-catalyzed aerobic oxidative cross-dehydrogenative coupling of terminal alkynes with thiols leading to alkynyl sulfides

A heterogeneous copper-catalyzed direct oxidative cross-dehydrogenative coupling of terminal alkynes with thiols was achieved in DMSO at 70 °C in the presence of an MCM-41-supported bidentate nitrogen copper(I) complex [MCM-41-2N-CuCl] and K2CO

A General and highly efficient protocol for the synthesis of chalcogenoacetylenes by copper(I)-terpyridine catalyst

A highly efficient copper-catalyzed Csp-X (X = S, Se, Te) bond-forming reaction of terminal alkynes and diorganyl dichalcogenides has been developed. This transformation was realized through the use of copper(I) iodide as a catalyst, 4′-(4-meth

Regiocontrolled synthesis of ring-fused thieno[2,3-c]pyrazoles through 1,3-dipolar cycloaddition of nitrile imines with sulfur-based acetylenes

1,3-Dipolar cycloadditions of C-carboxymethyl-N-arylnitrile imines with substituted acetylenes bearing thiol or sulfone groups were studied. The sulfur controls the regiochemistry of the reaction, and this protocol was applied to the synthesis of ring-fus

Thioindigo precursor: Control of polymorph of thioindigo

The precursor was converted to thioindigo with P21/c structure by heating. 2,2′-Bi[-3(2H)-thiophenon]ylidene with two bicyclo[2.2.2]-octadiene moieties was quantitatively converted to thioindigo by the retro-Diels-Alder reaction. The thioindigo solid obtained from the precursor had the P21/c structure which was different from the commercial thioindigo samples (P21/n).

Short and efficient preparation of alkynyl selenides, sulfides and tellurides from terminal alkynes

Diphenyl diselenide reacts with terminal alkynes at room temperature in DMSO in the presence of catalytic amounts of copper iodide to give good to excellent yields of alkynyl phenyl selenides. The reaction occurs under neutral conditions and the solvent a

Synthesis of 2-(Trimethylsilyl)ethyl Benzenesulfenate and Benzeneselenenate and Their Reaction with Some Electrophiles in the Presence of Tetrabutylammonium Fluoride

2-(Trimethylsilyl)ethyl benzenesulfenate was allowed to react with several halides in the presence of tetrabutylammonium fluoride (TBAF) to afford the corresponding phenyl sulfoxides as the main product.In the reaction of 2-(trimethylsilyl)ethyl benzeneselenenate and several halides with TBAF, the corresponding alcohols were obtained as the main product.

PREPARATION AND DIELS-ALDER REACTIVITY OF ETHYL-β-PHENYLSULFONYLPROPIOLATE

Ethyl-β-phenylsulfonylpropiolate (1b) is a reactive and highly regioselective dienophile in the Diels-Alder reaction.