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14174-48-2

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14174-48-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14174-48-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,1,7 and 4 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 14174-48:
(7*1)+(6*4)+(5*1)+(4*7)+(3*4)+(2*4)+(1*8)=92
92 % 10 = 2
So 14174-48-2 is a valid CAS Registry Number.

14174-48-2Downstream Products

14174-48-2Relevant articles and documents

Asymmetric hydrogenation of furans and benzofurans with iridium-pyridine-phosphinite catalysts

Pauli, Larissa,Tannert, Re,Scheil, Robin,Pfaltz, Andreas

, p. 1482 - 1487 (2015)

Enantioselective hydrogenation of furans and benzofurans remains a challenging task. We report the hydrogenation of 2- and 3-substituted furans by using iridium catalysts that bear bicyclic pyridine-phosphinite ligands. Excellent enantioselectivities and high conversions were obtained for monosubstituted furans with a 3-alkyl or 3-aryl group. Furans substituted at the 2-position and 2,4-disubstituted furans proved to be more difficult substrates. The best results (80-97% conversion, 65-82% enantiomeric excess) were obtained with monosubstituted 2-alkylfurans and 2-[4-(trifluoromethyl)phenyl]furan. Benzofurans with an alkyl substituent at the 2- or 3-position also gave high conversions and enantioselectivity, whereas 2-aryl derivatives showed essentially no reactivity. The asymmetric hydrogenation of a 3-methylbenzofuran derivative was used as a key step in the formal total synthesis of the cytotoxic naphthoquinone natural product (-)-thespesone.

Synthesis of 2-substituted furans by iron- and palladium-catalyzed coupling reactions

Haner, Jamie,Jack, Kelsey,Nagireddy, Jaipal,Raheem, Mohammed Abdul,Durham, Robin,Tam, William

, p. 731 - 738 (2011)

The synthesis of 2-substituted furans via palladium- and iron-catalyzed coupling utilizing 2-bromofuran is described. Whereas palladium-catalyzed Suzuki coupling effectively provided the corresponding aryl furans, little or no product was obtained by palladium-catalyzed coupling with various alkyl nucleophiles. Iron-catalyzed coupling proved effective for the synthesis of primary and secondary alkyl furans in modest yields and aryl furans in low yields. Georg Thieme Verlag Stuttgart New York.

Efficient one-pot synthesis of 2-substituted furans from 3,3-diethoxypropyne and aldehydes using a Ti(O-i-Pr)4/2i-PrMgCl reagent

Eom, Deok Ki,Choi, Seong Jib,An, Duk Keun

, p. 1141 - 1146 (2008/02/08)

A new, efficient and direct synthetic method for synthesizing 2-substituted furans using titanium-alkyne complex from easily preparable lithium propargyl alcohol derivatives derived from commercially available 3,3-diethoxypropyne, n-butyllithium and aldehydes by a Ti(O-i-Pr)4/2 i-PrMgCl reagent in 68-85percent yields.

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