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70485-98-2

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70485-98-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70485-98-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,4,8 and 5 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 70485-98:
(7*7)+(6*0)+(5*4)+(4*8)+(3*5)+(2*9)+(1*8)=142
142 % 10 = 2
So 70485-98-2 is a valid CAS Registry Number.

70485-98-2Relevant articles and documents

Highly regioselective synthesis of cis-β-enaminones by 1,4-addition of propiolaldehydes

Shi, Wenjuan,Sun, Shaofa,Wu, Minghu,Catano, Bryant,Li, Wan,Wang, Jian,Guo, Haibing,Xing, Yalan

supporting information, p. 468 - 471 (2015/04/27)

A convenient one-pot strategy for the regioselective synthesis of cis-β-enaminones has been developed via the condensation of propiolaldehydes and amines in EtOH. This process has opened a new synthetic route to enamines in good yield. A possible reaction mechanism involving a Michael addition/enol tautomerization via a six-membered ring transition state is proposed.

Acetylide Ion (C22-) as a synthon to link electrophiles and nucleophiles: A simple method for enaminone synthesis

Yu, Dingyi,Sum, Yin Ngai,Ean, Amanda Chng Cheng,Chin, Mei Ping,Zhang, Yugen

supporting information, p. 5125 - 5128 (2013/06/27)

Friendly competition: A three-component reaction system composed of calcium carbide, an aryl aldehyde, and an amine gave enaminones or propargylamines (see picture) in a predictable manner through competitive pathways. The system enables the cost-efficient synthesis of a variety of enaminones from readily accessible small molecules and demonstrates the versatility of the acetylide ion, which can be used to bridge electrophiles and nucleophiles. Copyright

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