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17123-60-3

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17123-60-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17123-60-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,1,2 and 3 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 17123-60:
(7*1)+(6*7)+(5*1)+(4*2)+(3*3)+(2*6)+(1*0)=83
83 % 10 = 3
So 17123-60-3 is a valid CAS Registry Number.
InChI:InChI=1/C7H12O/c1-4-5-7(8)6(2)3/h4,7-8H,1-2,5H2,3H3

17123-60-3Relevant articles and documents

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Fleischacker,Woods

, p. 3436,3439 (1956)

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Cobalt-Catalyzed Allylic C(sp3)-H Carboxylation with CO2

Michigami, Kenichi,Mita, Tsuyoshi,Sato, Yoshihiro

supporting information, p. 6094 - 6097 (2017/05/08)

Catalytic carboxylation of the allylic C(sp3)-H bond of terminal alkenes with CO2 was developed with the aid of a Co/Xantphos complex. A wide range of allylarenes and 1,4-dienes were successfully transformed into the linear styrylacetic acid and hexa-3,5-dienoic acid derivatives in moderate to high yields, with excellent regioselectivity. The carboxylation showed remarkable functional group tolerability, so that selective addition to CO2 occurred in the presence of other carbonyl groups such as amide, ester, and ketone. Since styrylacetic acid derivatives can be readily converted into optically active γ-butyrolactones through Sharpless asymmetric dihydroxylation, this allylic C(sp3)-H carboxylation showcases a facile synthesis of γ-butyrolactones from simple allylarenes via short steps.

Diastereoselective, three-component cascade synthesis of tetrahydrofurans and tetrahydropyrans employing the tandem Mukaiyama aldol-lactonization process

Mitchell, T. Andrew,Zhao, Cunxiang,Romo, Daniel

supporting information; experimental part, p. 9544 - 9551 (2009/04/07)

(Chemical Equation Presented) A full account of studies leading to the development of a cascade sequence that generates as many as two C-C bonds, one C-O bond, and three new stereocenters providing substituted tetrahydrofurans (THFs) from simple γ-ketoaldehydes and thiopyridyl ketene acetals is described. The process involves a tandem Mukaiyama aldol-lactonization (TMAL) and accumulated evidence suggests the intermediacy of a silylated β-lactone that is intercepted by the pendant ketone. Formation of a cyclic oxocarbenium is followed by reduction with silicon-based nucleophiles leading to a highly diastereoselective synthesis of tetrahydrofurans. This cascade process has now been extended to the synthesis of tetrahydropyrans from simple δ-ketoaldehydes. The stereochemical outcome of the cascade processes described was determined by NOE correlations, coupling constant analysis, and X-ray crystallography of the derived oxygen heterocycles and is in accord with established and recently proposed models for nucleophilic additions to cyclic 5- and 6-membered oxocarbenium ions. The utility of this process was demonstrated by the synthesis of the tetrahydrofuran fragment of colopsinol B.

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