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137273-41-7

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137273-41-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137273-41-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,7 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137273-41:
(8*1)+(7*3)+(6*7)+(5*2)+(4*7)+(3*3)+(2*4)+(1*1)=127
127 % 10 = 7
So 137273-41-7 is a valid CAS Registry Number.

137273-41-7Relevant articles and documents

Asymmetric Hydrogenation of Racemic 6-Aryl 1,4-Dioxaspiro[4.5]decan-7-ones to Functionalized Chiral ?a'Aryl Cyclohexanols via a Dynamic Kinetic Resolution

Yang, Dan,Yang, Ai-Jiao,Chen, Yong,Xie, Jian-Hua,Zhou, Qi-Lin

supporting information, p. 1616 - 1620 (2021/03/03)

A ruthenium-catalyzed asymmetric hydrogenation method for the synthesis of functionalized β-aryl cyclohexanols is described. With chiral spiro ruthenium catalyst (Ra,S,S)-5c, a series of racemic α-aryl cyclohexanones bearing a β-monoethylene ketal group were hydrogenated to the corresponding functionalized β-aryl cyclohexanols in high yields with enantioselectivity of up to 99% ee via a dynamic kinetic resolution. This protocol can be conducted on a decagram scale and provide potential approaches for the synthesis of optically active and densely functionalized aryl cyclohexanols.

The search for tolerant Lewis acid catalysts. Part 2: Enantiopure cycloalkyldialkylsilyl triflimide catalysts

Tang, Zilong,Mathieu, Benoit,Tinant, Bernard,Dive, Georges,Ghosez, Léon

, p. 8449 - 8462 (2008/02/09)

A series of 2-aryl- and arylmethyl-3-dialkylphenylsilyl cycloalkanones have been prepared and resolved. The pure enantiomers were reduced to the corresponding cycloalkane derivatives. These were used for the in situ generation of enantiopure cycloalkylsil

Use of conjugated dienones in cyclialkylations: Total syntheses of arucadiol, 1,2-didehydromiltirone, (±)-hinokione, (±)-nimbidiol, sageone, and miltirone

Majetich, George,Liu, Shuang,Fang, Jing,Siesel, David,Zhang, Yong

, p. 6928 - 6951 (2007/10/03)

Functionalized hydrophenanthrenes can be prepared using a cyclialkylation-based strategy. These annulations are highly dependent on the directing effects of the arene substitutents and on conformational considerations. The utility of this methodology was featured in the syntheses of six diterpenoids.

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