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1383663-42-0

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1383663-42-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1383663-42-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,3,6,6 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1383663-42:
(9*1)+(8*3)+(7*8)+(6*3)+(5*6)+(4*6)+(3*3)+(2*4)+(1*2)=180
180 % 10 = 0
So 1383663-42-0 is a valid CAS Registry Number.

1383663-42-0Downstream Products

1383663-42-0Relevant articles and documents

Base-mediated selective synthesis of diversely substituted N-heterocyclic enamines and enaminones by the hydroamination of alkynes

Joshi, Megha,Patel, Monika,Tiwari, Rakesh,Verma, Akhilesh K.

experimental part, p. 5633 - 5645 (2012/08/07)

Regio- and stereoselective alkynylation of various N-heterocycles 1a-l using potassium and cesium salts in DMSO is described. Terminal alkynes 2a-k and internal alkynes 4a-f provided the kinetically stable Z-enamines 3a-l and 5a-i in good to excellent yields using KOH at 120 °C. Addition of heterocyclic amines to 1,3- and 1,4-diethynylbenzene 6a-b provided the mixture of E/Z isomers with KOH; however, with Cs2CO3 selectively Z-isomers 7ab-db were obtained by the hydroamination at one triple bond. This developed methodology also provides an easy and novel access for the synthesis of enaminones 10a-c. The detailed work also supports the formation of cis-isomer by preferential addition of o-haloarylalkynes followed by intramolecular C2 arylation in the copper-catalyzed tandem synthesis of indolo and pyrrolo[2,1-a]isoquinolines.

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