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Triphenylmethyl[BCl4], also known as trityl tetrachloroborate, is a complex organic-inorganic compound consisting of a triphenylmethyl (trityl) cation and a tetrachloroborate anion. The triphenylmethyl cation is a stable, non-aromatic, and highly resonance-stabilized carbonium ion, with three phenyl groups attached to a central carbon atom. The tetrachloroborate anion is a derivative of boron, with four chlorine atoms replacing the hydrides in boron's tetrahedral structure. [triphenylmethyl][BCl4] is often used as a Lewis acid catalyst in organic synthesis, particularly in Friedel-Crafts reactions, due to its ability to activate electrophiles and facilitate the formation of carbon-carbon bonds. It is also known for its use in the protection of alcohols and amines, as well as in the synthesis of various pharmaceuticals and agrochemicals.

2151-80-6

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2151-80-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2151-80-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,5 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2151-80:
(6*2)+(5*1)+(4*5)+(3*1)+(2*8)+(1*0)=56
56 % 10 = 6
So 2151-80-6 is a valid CAS Registry Number.

2151-80-6Downstream Products

2151-80-6Relevant academic research and scientific papers

Synthesis and structure of tritylium salts

Hinz, Alexander,Labbow, René,Rei?, Fabian,Schulz, Axel,Sievert, Katharina,Villinger, Alexander

, p. 1641 - 1650 (2015)

Several tritylium compounds [Ph3C][A] have been isolated by salt metathesis or halide abstraction reactions starting from Ph3C-X (X = halogen) and Lewis acids in good yields (A = BF4, BCl4, AlCl4, GaCl4, PF6, AsF6, SbF6, SbCl6, CHB11H5Cl6, CHB11Cl11, CHB11H5Br6, CF3COO, CF3SO3, N3). The structures of 15 tritylium salts bearing different types of weakly coordinating anions (A-) have been determined. The structures are discussed on the basis of ion pairing versus covalent bond formation and solid-state interactions in comparison with gas-phase data.

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