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1245572-22-8

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1245572-22-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1245572-22-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,5,5,7 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1245572-22:
(9*1)+(8*2)+(7*4)+(6*5)+(5*5)+(4*7)+(3*2)+(2*2)+(1*2)=148
148 % 10 = 8
So 1245572-22-8 is a valid CAS Registry Number.

1245572-22-8Downstream Products

1245572-22-8Relevant articles and documents

Regio- And stereoselective intermolecular hydroalkoxylation of alkynes catalysed by cationic gold(I) complexes

Corma, Avelino,Ruiz, Violeta R.,Leyva-Perez, Antonio,Sabater, Maria J.

supporting information; experimental part, p. 1701 - 1710 (2010/10/04)

Vinyl ethers and ketals are obtained from the reaction of phenylacetylene derivatives and dimethyl acetylenedicarboxylate (DMAD) with alcohols in good yields and levels of stereoselectivity by using cationic gold(I)-phosphine complexes as catalysts. By choosing the appropriate phosphine, the selective formation of the Z or the E isomer of the vinyl ether can be tuned, and the undesired formation of the ketal can be controlled. The isomerisation of fumarates (Z-isomer) to maleates (E-isomer) is a gold-catalysed process that can be conducted in onepot. When using polyols, 5-membered cyclic ketals are easily isolated by extraction with hexane and the gold complex can be reused.

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