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301191-47-9

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301191-47-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 301191-47-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,1,1,9 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 301191-47:
(8*3)+(7*0)+(6*1)+(5*1)+(4*9)+(3*1)+(2*4)+(1*7)=89
89 % 10 = 9
So 301191-47-9 is a valid CAS Registry Number.

301191-47-9Relevant articles and documents

Stereoinversion of Unactivated Alcohols by Tethered Sulfonamides

Marcyk, Paul T.,Jefferies, Latisha R.,AbuSalim, Deyaa I.,Pink, Maren,Baik, Mu-Hyun,Cook, Silas P.

, p. 1727 - 1731 (2019/01/21)

The direct, catalytic substitution of unactivated alcohols remains an undeveloped area of organic synthesis. Moreover, catalytic activation of this difficult electrophile with predictable stereo-outcomes presents an even more formidable challenge. Described herein is a simple iron-based catalyst system which provides the mild, direct conversion of secondary and tertiary alcohols to sulfonamides. Starting from enantioenriched alcohols, the intramolecular variant proceeds with stereoinversion to produce enantioenriched 2- and 2,2-subsituted pyrrolidines and indolines, without prior derivatization of the alcohol or solvolytic conditions.

Aminophosphine phosphinites derived from chiral 1,2-diphenyl-2-aminoethanols: Synthesis and application in rhodium-catalyzed asymmetric hydrogenation of dehydroamino acid derivatives

Lou, Rongliang,Mi, Aiqiao,Jiang, Yaozhong,Qin, Yong,Li, Zhi,Fu, Fangmin,Chan, Albert S.C

, p. 5857 - 5863 (2007/10/03)

A series of chiral aminophosphine phosphinites DPAMPPs was synthesized from optically active 1,2-diphenyl-2-aminoethanols. The erythro-DPAMPPs were found to serve as excellent ligands for rhodium-catalyzed asymmetric hydrogenation of dehydroamino acid derivatives. For an array of dehydroamino acid precursors, remarkably high enantioselectivity (up to 98.4% e.e.) and reactivity (the ratio of substrate/catalyst up to 10000) were observed. Some factors controlling the enantioselectivity were examined and discussed. (C) 2000 Elsevier Science Ltd.

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