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443638-87-7

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443638-87-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 443638-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,3,6,3 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 443638-87:
(8*4)+(7*4)+(6*3)+(5*6)+(4*3)+(3*8)+(2*8)+(1*7)=167
167 % 10 = 7
So 443638-87-7 is a valid CAS Registry Number.

443638-87-7Relevant articles and documents

Transition Metal-Free Regioselective Remote C?H Bond 2,2,2-Trifluoroethoxylation of 8-Aminoquinoline Derivatives at the C5 Position

Ruyet, Louise,Poisson, Thomas,Besset, Tatiana

supporting information, p. 3407 - 3410 (2021/06/28)

The regioselective 2,2,2-trifluoroethoxylation at the C5 position of amides derived from the 8-aminoquinoline has been developed. In the presence of PIDA, an unprecedented and undirected transition metal-free transformation was achieved using the readily available and appealing 2,2,2-trifluoroethanol as the fluorinated source. The selective distal 2,2,2-trifluoroethoxylation of an array of amides was achieved in moderate to good yields (12 examples, up to 61 % yield). This approach provided efficient access to high-value added fluorinated quinoline derivatives, key building blocks for bulk and fine chemical industry.

Facile Synthesis of Alkylidene Phthalides by Rhodium-Catalyzed Domino C?H Acylation/Annulation of Benzamides with Aliphatic Carboxylic Acids

Liu, Sien,He, Bangyue,Li, Hongyi,Zhang, Xiaofeng,Shang, Yaping,Su, Weiping

, p. 15628 - 15633 (2021/10/05)

The Rh-catalyzed ortho-C(sp2)?H functionalization of 8-aminoquinoline-derived benzamides with aliphatic acyl fluorides generated in situ from the corresponding acids has been developed. This reaction initiated with 8-aminoquinoline-directed ortho-C(sp2)?H acylation, which was accompanied by subsequent intramolecular nucleophilic acyl substitution of amide group to produce alkylidene phthalides This approach exhibits high stereo-selectivity for Z-isomer products, and tolerates a variety of functional groups as well as aliphatic carboxylic acids with diverse structural scaffolds.

C-5 selective chlorination of 8-aminoquinoline amides using dichloromethane

Lin, Xinxin,Zeng, Cuilian,Liu, Chengkou,Fang, Zheng,Guo, Kai

supporting information, p. 1352 - 1357 (2021/02/26)

An oxidant-free electrochemical regioselective chlorination of 8-aminoquinoline amides at ambient temperature in batch and continuous-flow was achieved. Inert DCM was used as the chlorinating reagent. Owing to the continuous-flow setup, the reaction scale

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