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1434152-98-3

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1434152-98-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1434152-98-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,4,1,5 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1434152-98:
(9*1)+(8*4)+(7*3)+(6*4)+(5*1)+(4*5)+(3*2)+(2*9)+(1*8)=143
143 % 10 = 3
So 1434152-98-3 is a valid CAS Registry Number.

1434152-98-3Downstream Products

1434152-98-3Relevant articles and documents

Tandem synthesis of pyrroloacridones via [3 + 2] alkyne annulation/ring-opening with concomitant intramolecular aldol condensation

Verma, Akhilesh K.,Kotla, Siva K. Reddy,Aggarwal, Trapti,Kumar, Sonu,Nimesh, Hemlata,Tiwari, Rakesh K.

, p. 5372 - 5384 (2013/07/25)

An efficient cascade strategy for the direct synthesis of pyrrolo[3,2,1-de]acridones 4a-v, 5a-h from iodo-pyranoquinolines 2a-i by the palladium-catalyzed regioselective [3 + 2] alkyne annulation/ring-opening followed by intramolecular aldol condensation under microwave irradiation is described. The chemistry involves the in situ formation of pyrroloquinolines Y, via palladium-catalyzed selective [3 + 2] annulation of iodopyranoquinolines and internal akynes with ring-opening and successive intramolecular cross-aldol condensation. Both the symmetrical and unsymmetrical internal alkynes were reacted smoothly to provide the desired pyrroloacridones in good yields. This methodology provides the facile conversion of easily accessble iodopyranoquinoline into highly functionalized biologically important pyrroloacridones in a single process.

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