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1394123-41-1

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1394123-41-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1394123-41-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,4,1,2 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1394123-41:
(9*1)+(8*3)+(7*9)+(6*4)+(5*1)+(4*2)+(3*3)+(2*4)+(1*1)=151
151 % 10 = 1
So 1394123-41-1 is a valid CAS Registry Number.

1394123-41-1Relevant articles and documents

Iodine-mediated synthesis of benzo[: A] fluorenones from yne-enones

Akbar, Sikkandarkani,John Tamilarasan,Srinivasan, Kannupal

, p. 23652 - 23657 (2019)

The chalcones derived from o-alkynylacetophenones and aromatic aldehydes (yne-enones) when heated under reflux with iodine in acetic acid gave a range of benzo[a]fluorenone derivatives in moderate to good yields. The transformation involves the formation of a vinyl indenone intermediate through regioselective alkyne hydration and intramolecular aldol condensation followed by electrocyclic ring closure and aromatization.

Radical-Triggered Tandem Cyclization of 1,6-Enynes with H2O: A Way to Access Strained 1 H-Cyclopropa[ b]naph thalene-2,7-diones

Zheng, Limeng,Zhou, Bingwei,Jin, Hongwei,Li, Ting,Liu, Yunkui

supporting information, p. 7053 - 7056 (2018/11/24)

A radical-triggered tandem cyclization of 1,6-enynes has been developed herein. Strained 1H-cyclopropa[b]naphthalene-2,7-diones are successfully obtained in moderate to good yields with excellent stereoselectivity. Mechanistic studies reveal a key role of water in generating a hydroxyl radical that initiates a sequential Michael addition/ring closure pathway. Importantly, the formed hydroxyl is proposed to be a good leaving group during the cyclopropane ring formation.

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