56639-88-4

Upstream product

• 30893-63-1 (p-tolylthio)acetic acid chloride 
• 3996-29-0 2-[(4-methylphenyl)thio]acetic acid 
• 106-45-6 para-thiocresol 
• 623-13-2 4-methylphenyl methylsulfide 
• 79-04-9 chloroacetyl chloride 

Downstream Products

• 19995-06-3 2-benzylidene-5-methyl-benzo[b]thiophen-3-one 
• 14315-14-1 5-methylthianaphthene 
• 1379675-28-1 (Z)-5-methyl-2-(4-pentylbenzylidene)benzo[b]thiophen-3(2H)-one 
• 60904-82-7 (Z)-5-methyl-2-(4-methylbenzylidene)benzo[b]thiophen-3(2H)-one 
• 61976-59-8 2-(4-methoxybenzylidene)-5-methylbenzo[b]thiophen-3(2H)-one 
• 60904-81-6 (Z)-2-benzylidene-5-methylbenzo[b]thiophen-3(2H)-one 
• 60904-88-3 (Z)-2-(4-chlorobenzylidene)-5-methylbenzo[b]thiophen-3(2H)-one 

Relevant academic research and scientific papers

MODULATORS OF HSD17B13 AND METHODS OF USE THEREOF

The disclosure relates to compounds and pharmaceutical compositions capable of modulating the hydroxysteroid 17-beta dehydrogenase (HSD17B) family member proteins including inhibiting the HSD17B member proteins, e.g. HSD17B13. The disclosure further relates to methods of treating liver diseases, disorders, or conditions with the compounds and pharmaceutical compositions disclosed herein, in which the HSD17B family member protein plays a role.

Integrated Synthesis of Thienyl Thioethers and Thieno[3,2-b]thiophenes via 1-Benzothiophen-3(2 H)-ones

A one-pot procedure for the synthesis of thienyl thioethers is described. Several thienyl thioethers were synthesized by a TfOH-promoted Friedel-Crafts-type cyclization, a subsequent nucleophilic attack by an arenethiol, and dehydration. This protocol was

Bistable Photoswitching of Hemithioindigo with Green and Red Light: Entry Point to Advanced Molecular Digital Information Processing

Photoswitches reacting to visible light instead of harmful UV irradiation are of very high interest due to the mild and broadly compatible conditions of their operation. Shifting the absorption into the red region of the electromagnetic spectrum usually comes at the cost of losing thermal stability of the metastable state—the switch switches off by itself. Only recently have photoswitches become available that combine visible light responsiveness with high bistability. However, shifting the wavelengths for bistable photoswitching beyond 600 nm is still a great challenge without involving secondary processes such as two-photon absorption or sensitization. We present a simple hemithioindigo photoswitch that can efficiently be photoisomerized using green and red light while maintaining a high thermal barrier of the metastable state. This highly sought after properties allow for selective switching in a mixture of hemithioindigo dyes. In addition, protonation can be used as second independent input altering the light response of the switch and allowing construction of advanced molecular digital information processing devices. This is demonstrated by realizing a broad variety of logical operations covering combinational and sequential logic behavior. By making use of the protonation-induced loss of thermal bistability, a high security keypad lock could be realized, which distinguishes the sequences of three different inputs and additionally erases its unlocked state after a short time.

Selective guest exchange in encapsulation complexes using light of different wavelenghts

A matter of light: Selective control over the assembly of two distinct encapsulation complexes in solution is achieved by using light of two wavelengths and heat. Guest exchange can be triggered in a sequential or parallel fashion, depending on the wavelength applied, and three combinations of encapsulation complexes (see scheme) are accessible. Photoisomerization of azobenzene (red capsule) and hemithioindigo guests (yellow capsule) are used as triggers. Copyright

Selena and thiadiazole fused heterocycles

The carbonyl group present in benzothiophen-3-ones 4, 3,4- dihydrothiopyrano[3,2-b]benzothiophen-4(2H)-ones 11 and 3,4-dihydro-2H,5H- thiopyrano[2',3' : 4,5]thiopyrano[3,2-b]benzothiophen4-ones 16 has been made use to develop 1,2,3-selena and thiadiazoles via their semicarbazones by the reaction with selenium dioxide and thionyl chloride. The IR, H NMR and C, H analyses has been utilized to characterize the new compounds.

MODERN FRIEDEL-CRAFTS CHEMISTRY. XI. CYCLIZATION OF ARYL HALOALKYL SULFONES, ARYLSULFONYLACYL CHLORIDES AND THEIR CORRESPONDING SULFIDES

The sulfone group deactivation for cyclialkylation and cycliacylation reactions in the presence of Friedel-Crafts catalysts was demonstrated in a number of aryl chloroalkylsulfones (1-8) and arylsulfonylacyl chlorides (17a-22a), respectively.As expected, the corresponding arylchloroalkyl sulfides (9-16) and arylmercaptoacyl chlorides (13a-28a) underwent ring-closure reaction in most cases under the same conditions.The ease of cyclization was governed by the ring size, the stability of the attacking carbocation and the nucleophilicity of the aryl moiety.Also, the behaviour of benzyl sulfones (29, 31a, and 32a) and sulfides (33, 34a and 36a) was inconsistent.Noteworthy, the Friedel-Crafts cyclization reaction is thus considered an accessible method for the synthesis of compounds 37-41 and 45, 51.

The Synthesis of Thiophenium and Oxazolium Salts from Diazoketones

4-Diazoacetylthianthren with perchloric acid in acetonitrile gave 2-oxo-1,2-dihydrothieno-thianthrenium perchlorate which gave the corresponding enol ether with diazomethane.This ether was compared with 3-methoxy-1-methylbenzothiophenium perchlorate, prepared from 3-methoxythiophen, and which was much more stable to solvolysis than the demethoxy-analogue.In contrast to the 4-diazoacetylthianthren, 7-diazoacetyl-2-methylbenzothiophen with acetonitrile and perchloric acid cyclized in an alternative mode to give a new synthesis of 2-methyl-4-substituted oxazolium perchlorates.