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416887-98-4

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416887-98-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 416887-98-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,1,6,8,8 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 416887-98:
(8*4)+(7*1)+(6*6)+(5*8)+(4*8)+(3*7)+(2*9)+(1*8)=194
194 % 10 = 4
So 416887-98-4 is a valid CAS Registry Number.

416887-98-4Downstream Products

416887-98-4Relevant articles and documents

A Domino Aza-Piancatelli Rearrangement/Intramolecular Diels-Alder Reaction: Stereoselective Synthesis of Octahydro-1 H-cyclopenta[ cd]isoindole

Gouse, Shaik,Reddy, Narra Rajashekar,Baskaran, Sundarababu

, p. 3822 - 3827 (2019)

For the first time, an efficient one-pot method for the construction of an angularly fused 5-6-5 aza-tricyclic framework has been developed in a highly stereoselective manner. This domino reaction is a novel combination of aza-Piancatelli rearrangement an

A General Palladium–Phosphine Complex To Explore Aryl Tosylates in the N-Arylation of Amines: Scope and Limitations

Choy, Pui Ying,Chung, Kin Ho,Yang, Qingjing,So, Chau Ming,Sun, Raymond Wai-Yin,Kwong, Fuk Yee

supporting information, p. 2465 - 2474 (2018/09/10)

The scope and limitations of the monoselective N-arylation of various amines by using aryl and hetaryl tosylates are presented. The air-stable and easily accessible Pd(OAc)2/CM-phos {CM-phos=2-[2-(dicyclohexylphosphino)phenyl]-1-methyl-1H-indole}catalyst system was able to deal with a wide range of aryl tosylate substrates as well as amine nucleophiles, including primary and secondary cyclic/acyclic aliphatic amines and anilines. NH-Bearing heterocycles such as indole, carbazole, pyrrole, 10-phenothiazine, and 10-phenoxazine were shown to be feasible coupling partners under this catalytic system. The described reaction conditions tolerate a wide range of functional groups and allow an array of aromatic amines as well as unsymmetrical amine products to be easily accessed from the various phenolic derivatives. Interestingly, this catalyst system even offers the opportunity to perform the reaction in water medium. We also report the intermolecular coupling of optically active α-central chiral amines with aryl tosylates without erosion of the enantiomeric purity.

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