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1198575-39-1

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1198575-39-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1198575-39-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,8,5,7 and 5 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1198575-39:
(9*1)+(8*1)+(7*9)+(6*8)+(5*5)+(4*7)+(3*5)+(2*3)+(1*9)=211
211 % 10 = 1
So 1198575-39-1 is a valid CAS Registry Number.

1198575-39-1Relevant articles and documents

Cobalt(III)-Catalyzed C-H/N-O Functionalizations: Isohypsic Access to Isoquinolines

Wang, Hui,Koeller, Julian,Liu, Weiping,Ackermann, Lutz

, p. 15525 - 15528 (2015)

C-H/N-O functionalizations by cobalt(III) catalysis allowed the expedient synthesis of a broad range of isoquinolines. Thus, internal and challenging terminal alkynes proved to be viable substrates for an isohypsic annulation, which was shown to proceed by a facile C-H cobaltation.

Ruthenium-Catalyzed Annulation of N -Cbz Hydrazones via C-H/N-N Bond Activation for the Rapid Synthesis of Isoquinolines

Bhanage, Bhalchandra M.,Deshmukh, Dewal S.

, p. 2506 - 2514 (2019)

In this work, N -Cbz hydrazone has been employed as a rarely explored directing group for the synthesis of isoquinolines by annulation with internal alkynes via C-H/N-N activation using Ru catalyst. Additive as well as external oxidant-free rapid protocol

Rhodium-Catalyzed One-Pot Access to N-Polycyclic Aromatic Hydrocarbons from Aryl Ketones through Triple C-H Bond Activations

Biswal, Pragati,Banjare, Shyam Kumar,Pati, Bedadyuti Vedvyas,Mohanty, Smruti Ranjan,Ravikumar, Ponneri Chandrababu

, p. 1108 - 1117 (2021/01/09)

A Rh-catalyzed pot and step economic synthesis of aza-polycyclic aromatic hydrocarbons (N-PAHs) from readily available aryl ketones and alkynes has been disclosed. Additionally, a novel synthetic application of the well-known aminating reagent hydroxylamine-O-sulfonic acid (HOSA) has been explored as an in situ redox-neutral directing group for the formation of N-PAHs via isoquinoline. Multiple bond formation in a single operation through a cascade of triple C-H bond activations is the beauty of this protocol. The challenging annulations of two different alkynes in a regioselective fashion have been demonstrated effectively. Mechanistic studies reveal that 3,4-diphenyl-1-methylisoquinoline is an active intermediate for this one-pot transformation.

Rh(III)-catalyzed synthesis of isoquinolines using the N-Cl bond of N-chloroimines as an internal oxidant

Chu, Benfa,Fang, Lili,Guo, Shan,Qi, Bing,Shi, Pengfei,Wang, Qi,Zhu, Jin

, (2020/03/10)

The Rh(III)-catalyzed coupling of N-chloroimines with alkynes for the efficient synthesis of isoquinolines is reported. This represents the first use of the N-Cl bond of N-chloroimines as an internal oxidant for construction of the isoquinoline skeleton. The synthesis features atom and step economy, a green solvent (EtOH), mild reaction conditions, and a broad substrate scope.

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