80404-53-1

Upstream product

• 80404-54-2 ethyl 3-(phenylthio)propiolate 
• 1212-08-4 S-Phenyl benzenethiosulfonate 
• 623-47-2 propynoic acid ethyl ester 

Downstream Products

• 80404-56-4 2-Benzenesulfonyl-6-methyl-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 
• 80404-59-7 3-Benzenesulfonyl-bicyclo[2.2.2]octa-2,5-diene-2-carboxylic acid ethyl ester 
• 1260001-45-3 5-ethyl 3-methyl 1-(4-nitrophenyl)-4-(phenylsulfonyl)-1H-pyrazole-3,5-dicarboxylate 
• 1260001-39-5 4-ethyl 3-methyl 1-(4-nitrophenyl)-5-(phenylsulfonyl)-1H-pyrazole-3,4-dicarboxylate 
• 1260001-40-8 4-ethyl 3-methyl 1-(4-methoxyphenyl)-5-(phenylsulfonyl)-1H-pyrazole-3,4-dicarboxylate 
• 1260001-46-4 5-ethyl 3-methyl 1-(4-methoxyphenyl)-4-(phenylsulfonyl)-1H-pyrazole-3,5-dicarboxylate 
• 1260001-44-2 5-ethyl 3-methyl 1-phenyl-4-(phenylsulfonyl)-1H-pyrazole-3,5-dicarboxylate 
• 1260001-38-4 4-ethyl 3-methyl 1-phenyl-5-(phenylsulfonyl)-1H-pyrazole-3,4-dicarboxylate 
• 80404-62-2 2-Benzenesulfonyl-6-methyl-benzoic acid ethyl ester 
• 502506-72-1 3-benzenesulfonyl-7-aza-bicyclo[2.2.1]hepta-2,5-diene-2,7-dicarboxylic acid 7-tert-butyl ester 2-ethyl ester 
• 100228-57-7 C₄₇H₄₈N₄O₈S 
• 80404-57-5 3-Benzenesulfonyl-7-oxa-bicyclo[2.2.1]hepta-2,5-diene-2-carboxylic acid ethyl ester 

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.

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).

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.