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132283-68-2

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132283-68-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 132283-68-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,2,8 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 132283-68:
(8*1)+(7*3)+(6*2)+(5*2)+(4*8)+(3*3)+(2*6)+(1*8)=112
112 % 10 = 2
So 132283-68-2 is a valid CAS Registry Number.

132283-68-2Relevant articles and documents

Cascade condensation, cyclization, intermolecular dipolar cycloaddition by multi-component coupling and application to a synthesis of (±)-crispine A

Coldham, Iain,Jana, Samaresh,Watson, Luke,Martin, Nathaniel G.

scheme or table, p. 1674 - 1679 (2009/06/27)

A general approach for the synthesis of various nitrogen-containing heterocyclic compounds is described using an intermolecular dipolar cycloaddition reaction of azomethine ylides and nitrones. Stabilized and non-stabilized azomethine ylide dipoles or the related nitrones were generated by condensation of 4-, 5- or 6-halo-aldehydes with a readily available amino-acid, amino-ester or hydroxylamine to give an imine followed by cyclization and either decarboxylation or loss of a proton. After intermolecular cycloaddition with an activated dipolarophile, bicyclic or polycyclic (if the ylide dipole and/or dipolarophile contain a ring) amines were produced. A short synthesis of the alkaloid (±)-crispine A was achieved based on this tandem/domino 3-component coupling chemistry.

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