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77702-44-4

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77702-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77702-44-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,0 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77702-44:
(7*7)+(6*7)+(5*7)+(4*0)+(3*2)+(2*4)+(1*4)=144
144 % 10 = 4
So 77702-44-4 is a valid CAS Registry Number.

77702-44-4Downstream Products

77702-44-4Relevant articles and documents

Ligandless palladium catalyzed reactions of arylboronic acids and sodium tetraphenylborate with aryl halides in aqueous media

Bumagin, Nikolai A.,Bykov, Victor V.

, p. 14437 - 14450 (1997)

Polyfunctional biaryls are prepared by a modified Suzuki cross-coupling reaction between arylboronic acids or sodium tetraphenylborate and aryl halides ArX. X = 1. Br. Cl in aqueous solvents or neat water using a phosphine-free palladium catalyst, and in the presence of bases (Na2CO3 or NaOH). All four phenyl groups of Ph4BNa participate ill the reaction. The reaction of Ph4BNa with aryl halides proceeds in water with high catalytic efficiency (250,000 catalytic cycles).

Reaction of Organoboron Compounds with Organic Halides in Aqueous Media, Catalyzed by "Ligand-Free" Palladium

Bumagin,Bykov

, p. 1925 - 1938 (2007/10/03)

The results of investigations of the reactions between aryllboric acids or sodium tetraphenylborate and organic halides in water and DMF- and acetone-water mixtures, catalyzed by palladium salts containing no phosphine ligands [Pd(OAc)2, PdCl2], are considered.

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