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1312684-51-7

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1312684-51-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1312684-51-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,1,2,6,8 and 4 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1312684-51:
(9*1)+(8*3)+(7*1)+(6*2)+(5*6)+(4*8)+(3*4)+(2*5)+(1*1)=137
137 % 10 = 7
So 1312684-51-7 is a valid CAS Registry Number.

1312684-51-7Relevant articles and documents

Phosphine- and water-promoted pentannulative aldol reaction

Satpathi, Bishnupada,Dutta, Lona,Ramasastry

, p. 1547 - 1551 (2019)

Herein, an efficient metal-free intramolecular aldol reaction for the synthesis of an unusual class of cyclopentanoids is described. The reaction of α-substituted dienones tethered with ketones in the presence of tributylphosphine and water provided aldols. The role of water was realised to be crucial for this transformation. Furthermore, isotopic labeling experiments provided vital information about the reaction mechanism.

Copper-mediated/catalyzed oxyalkylation of alkenes with alkylnitriles

Bunescu, Ala,Wang, Qian,Zhu, Jieping

supporting information, p. 14633 - 14636 (2015/01/09)

A copper-promoted oxyalkylation of alkenes with alkylnitriles has been developed. The protocol provides rapid access to phthalides (γ-lactones) or isochromanones (d-lactones) via the formation of a C(sp3)-C(sp3) and a C(sp3)-O bond with the generation of up to two quaternary carbon atoms. Mechanistic studies suggest that this reaction is initiated by the formation of the C(sp3)-C(sp3) bond rather than the C(sp3)-O bond. Catalytic conditions were subsequently developed using carboxylic acid as an internal nucleophile.

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