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![12- Crown Ether -4]()
12- Crown Ether -412-Crown-4 (12-crown-4) is an organic compound belonging to the crown ether family with a molecular formula of C8H16O4 and a molecular weight of 176.21 g/mol. Crown ether is a class ofread more -
![Tetrapropylammonium Bromide]()
Tetrapropylammonium BromideTetrapropylammonium Bromide 99.0% (CAS 1941-30-6) is mainly used as a phase transfer catalyst for organic synthesis and a molecular sieve template agent.read more -
![Tetrabutylammonium Hydrogensulfate]()
Tetrabutylammonium HydrogensulfateTetrabutylammonium Hydrogensulfate 99.0% (CAS 32503-27-8 ) ,is white to off-white solid, It is a commonly used phase transfer catalyst in organic synthesis chemistry such as halogen replacementread more -
![Tetrabutylammonium Tetrafluoroborate]()
Tetrabutylammonium TetrafluoroborateTetrabutylammonium tetrafluoroborate (CAS 429-42-5 ), also known as TBATFB, is an organic chemical compound with the formula C₁₆H₃₆BF₄N. It is a quaternary ammonium salt with solubility in water andread more -
![Benzyl Triethyl Ammonium Chloride]()
Benzyl Triethyl Ammonium ChlorideBenzyltriethylammonium chloride (CAS 56-37-1), with a purity of 99.0% min, is a quaternary ammonium salt. It shares similar properties with inorganic salts, being water-soluble and capable ofread more -
![Benzyl Tributyl Ammonium Chloride]()
Benzyl Tributyl Ammonium ChlorideBenzyl tributyl ammonium chloride （CAS 23616-79-7）is also known as BTBAC or BTBA, with the chemical formula C19H34ClN.It is a widely used quaternary ammonium salt. It is often used as a phaseread more -
![Methyl Triethyl Ammonium Chloride]()
Methyl Triethyl Ammonium ChlorideMethyl triethyl ammonium chloride, also known as triethylmethylammonium chloride, is an organic compound with the chemical formula C7H16NCl and a molecular weight of 151.68. This substance isread more -
![Triethylamine Hydrobromide]()
Triethylamine HydrobromideTriethylamine hydrobromide (CAS 636-70-4) , Purity 99.0% min,it is a white crystalline solid that is stable at room temperature. It is strongly hygroscopic and soluble in water. Its aqueous solutionread more -
![Tetraethylammonium Hydroxide]()
Tetraethylammonium HydroxideTetraethylammonium hydroxide (CAS 77-98-5) is used as a phase transfer catalyst, a template agent for molecular sieve synthesis, a cleaning agent, and a deimpurity agent in the petroleum industry.read more -
![15- Crown Ether -5]()
15- Crown Ether -515-crown-5 is a chemical with a molecular formula of C10H20O5, a molecular weight of 220.26 g/mol, and a CAS number of 33100-27-5. It belongs to the category of crown ether compounds, which are namedread more -
![18- Crown Ether -6]()
18- Crown Ether -618-crown-6 is an organic compound with the formula C12H24O6. It belongs to the macrocyclic ether class, characterized by a large ring in the molecular structure, with multiple oxygen atomsread more -
![Dibenzo-18-crown-6]()
Dibenzo-18-crown-6Dibenzo-18-crown ether-6, specifically, is a ring structure composed of two benzene rings through 18 carbon atoms and 6 oxygen atoms, of which 6 oxygen atoms are located on the ring, spaced apart,read more
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Why Use 18-Crown-6 for a Routine PTC Etherification?...
Why Use 18-Crown-6 for a Routine PTC Etherification? By Marc Halpern, the leading expert in industrial phase-transfer catalysis. In this patent application published four days ago, four...
CROWN ETHERS: SYNTHESIS & APPLICATIONS - JETIR...
application of crown ether is in PTC as anionic catalysts, ion transport mechanism in biological system, host guest chemistry and in solar cell system. KEY WORDS Aprotic, catalyst, cyclic,...
Fluorous phase transfer catalysts: From onium salts to crown ethers...
Oct 1, 2008 · A solution of fluorous crown ether in PFDMC was layered between neat 1-bromooctane and solid KI, thus generating a liquid–liquid–solid triphasic system....
Phase Transfer Catalysis: Mechanism, Advantages, …...
Nov 5, 2023 · Crown ether can selectively bind alkali and alkaline earth ions, generating complexes that are soluble in non-polar solvents due to their lipophilic nature, acting as carriers of the...
PHASE TRANSFER CATALYST IN ORGANIC …...
Jul 1, 2019 · Phase-transfer catalyst (PTC) has been popular for more than four decades in synthetic chemistry. The PT catalysis uses the PTC in a catalytic amount and it allows to react the......
Phase-Transfer Catalyst - an overview | ScienceDirect Topics...
Phase transfer catalyst (PTC) is used to transfer the desirable active form of an anion from the aqueous phase to organic phase where the reaction occurs....
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