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1236348-75-6

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1236348-75-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1236348-75-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,6,3,4 and 8 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1236348-75:
(9*1)+(8*2)+(7*3)+(6*6)+(5*3)+(4*4)+(3*8)+(2*7)+(1*5)=156
156 % 10 = 6
So 1236348-75-6 is a valid CAS Registry Number.

1236348-75-6Downstream Products

1236348-75-6Relevant articles and documents

Reaction of secondary phosphine oxides with acylacetylenes

Dvorko,Glotova,Ushakov,Gusarova

scheme or table, p. 485 - 490 (2010/08/19)

Secondary phosphine oxides reacted with 1-alkanoyl-2-phenylacetylenes in chemoselective fashion under mild conditions (20°C, THF) in the absence of a catalyst (diphenylphosphine oxide) or in the presence of potassium hydroxide [bis(2-phenylethyl)phosphine oxide] to give 1-alkyl-1-diphenyl(or 2-phenylethyl)-phosphoryl-3-phenylprop-2-yn-1-ols in up to 96% yield. The reaction of diphenylphosphine oxide with 1-alkanoyl-2-phenylacetylenes in the system KOH-THF (20°C) afforded not only adducts at the carbonyl group but also products of double α,β-addition at the triple bond, 2,3-bis(diphenylphosphoryl)-3-phenylpropan-1-ones.

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