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Thiophene, 2,3-dimethyl-5-phenyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

40808-42-2

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40808-42-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40808-42-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,8,0 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 40808-42:
(7*4)+(6*0)+(5*8)+(4*0)+(3*8)+(2*4)+(1*2)=102
102 % 10 = 2
So 40808-42-2 is a valid CAS Registry Number.

40808-42-2Relevant academic research and scientific papers

Synthesis of thiophenes in a deep eutectic solvent: heterocyclodehydration and iodocyclization of 1-mercapto-3-yn-2-ols in a choline chloride/glycerol medium

Mancuso, Raffaella,Maner, Asif,Cicco, Luciana,Perna, Filippo M.,Capriati, Vito,Gabriele, Bartolo

, p. 4239 - 4244 (2016/07/06)

The heterocyclodehydration and iodocyclization of readily available 1-mercapto-3-yn-2-ols has been performed in a deep eutectic solvent (DES), that is, ChCl/Gly (1:2 molar ratio; ChCl=choline chloride, Gly=glycerol), as a non-conventional green solvent. T

HETEROARYL COMPOUNDS AND METHODS OF USE THEREOF

-

, (2013/08/28)

Provided herein are thiophene compounds, methods of their synthesis, pharmaceutical compositions comprising the compounds, and methods of their use. The compounds provided herein are useful for the treatment, prevention, and/or management of various neurological disorders, including but not limited to, psychosis and schizophrenia.

Synthesis of substituted thiophenes by palladium-catalyzed heterocyclodehydration of 1-mercapto-3-yn-2-ols in conventional and nonconventional solvents

Gabriele, Bartolo,Mancuso, Raffaella,Veltri, Lucia,Maltese, Vito,Salerno, Giuseppe

, p. 9905 - 9909,5 (2012/12/12)

A variety of readily available 1-mercapto-3-yn-2-ols 5 were conveniently converted into the corresponding thiophenes 6 in good to high yields in MeOH as the solvent at 50-100 °C in the presence of catalytic amounts (1-2%) of PdI2 in conjunction with KI (KI:PdI2 molar ratio = 10). The catalyst could be made recyclable employing an ionic liquid, such as BmimBF4, as the solvent under suitable conditions.

Practical synthesis of photochromic diarylethenes in integrated flow microreactor systems

Asai, Tatsuro,Takata, Atsushi,Nagaki, Aiichiro,Yoshida, Jun-Ichi

experimental part, p. 339 - 350 (2012/06/30)

An effective method for the synthesis of photochromic diarylethenes through the generation of heteroaryllithiums and subsequent reaction with octafluorocyclopentene has been developed by using integrated flow microreactor systems. Reactions can be conducted without using cryogenic conditions by virtue of effective temperature and residence time control, although much lower temperatures (-1. Therefore, the present integrated flow microreactor method serves as a practical way of synthesizing various photochromic diarylethene derivatives. Too successful to be cool: An effective method for the synthesis of photochromic diarylethenes has been developed by using integrated flow microreactor systems. Reactions can be conducted without the need for cryogenic conditions by using these systems (see picture). The synthesis of unsymmetrical diarylethenes, which is difficult to achieve by using conventional macro batch systems, has also been accomplished. Copyright

Novel synthesis of substituted thiophenes by palladium-catalyzed cycloisomerization of (Z)-2-En-4-yne-1-thiols

Gabriele, Bartolo,Salerno, Giuseppe,Fazio, Alessia

, p. 351 - 352 (2007/10/03)

(formula presented) The first example of palladium-catalyzed cycloisomerization of (Z)-2-en-4-yne-1-thiols 1 to give substituted thiophenes 2 is reported. Cycloisomerization reactions are carried out under nitrogen at 25-100 °C in N,N-dimethylacetamide as

Synthesis of polysubstituted thiophenes by a catalytic cyclisation of functionalised episulfides

Marson, Charles M.,Campbell, Jonathan

, p. 7785 - 7788 (2007/10/03)

Substituted thiophenes are formed by the reaction of 1-alkynyl-2,3- epithioalcohols with a catalytic amount of mercury prepared from HgO and dilute sulfuric acid.

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