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255711-84-3

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255711-84-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 255711-84-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,5,7,1 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 255711-84:
(8*2)+(7*5)+(6*5)+(5*7)+(4*1)+(3*1)+(2*8)+(1*4)=143
143 % 10 = 3
So 255711-84-3 is a valid CAS Registry Number.

255711-84-3Relevant academic research and scientific papers

Rhodium-catalyzed enantioselective hydrogenation of unsaturated phosphonates by ClickFerrophos ligands

Konno, Takashi,Shimizu, Kenta,Ogata, Kenichi,Fukuzawa, Shin-Ichi

, p. 3318 - 3324 (2012)

Newly developed ClickFerrophos II ligands were applied in the hydrogenation of α,β-unsaturated phosphonates. The use of a rhodium/ClickFerrophos II catalyst was examined in the hydrogenation of functionalized α,β-unsaturated phosphonates and was revealed

Cu-catalyzed asymmetric conjugate reduction of β-substituted α,β-unsaturated phosphonates: an efficient synthesis of optically active β-stereogenic alkylphosphonates

Duan, Zheng-Chao,Hu, Xiang-Ping,Wang, Dao-Yong,Yu, Sai-Bo,Zheng, Zhuo

, p. 6720 - 6722 (2009)

A series of chiral alkylphosphonates bearing β-stereogenic center were synthesized in good enantioselectivities (up to 95% ee) via the CuH-catalyzed asymmetric conjugate reduction of β-substituted α,β-unsaturated phosphonates under optimal conditions usin

Inverting External Asymmetric Induction via Selective Energy Transfer Catalysis: A Strategy to β-Chiral Phosphonate Antipodes

Onneken, Carina,Bussmann, Kathrin,Gilmour, Ryan

, p. 330 - 334 (2019/12/11)

Enantiodivergent, catalytic reduction of activated alkenes relays stereochemical information encoded in the antipodal chiral catalysts to the pro-chiral substrate. Although powerful, the strategy remains vulnerable to costs and availability of sourcing bo

Rh-ImiFerroPhos complexes catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated hosphonates

Duan, Zhengchao,Wang, Lianzhi,Zuo, Xiaoyu,Hu, Xiangping,Zheng, Zhuo

, p. 227 - 231 (2014/03/21)

A series of chiral ferrocenyl diphosphine ligands (ImiFerroPhos ligands) has been applied to the hydrogenation of β-substituted α,β- unsaturated phosphonates to generate a range of optically active β-substituted alkylphosphonates in good yields with good

Enantioselective synthesis of optically active alkylphosphonates via Rh-catalyzed asymmetric hydrogenation of β-substituted α,β- unsaturated phosphonates

Duan, Zheng-Chao,Wang, Lian-Zhi,Song, Xin-Jian,Hu, Xiang-Ping,Zheng, Zhuo

scheme or table, p. 508 - 514 (2012/08/07)

The Rh-catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated phosphonates using (Sc,S p)-WalPhos as the chiral ligand is reported, in which a wide range of optically active β-substituted alkylphosphonates were obtained

Highly enantioselective Rh-catalyzed hydrogenation of β,γ- unsaturated phosphonates with chiral ferrocene-based monophosphoramidite ligands

Duan, Zheng-Chao,Hu, Xiang-Ping,Zhang, Cheng,Wang, Dao-Yong,Yu, Sai-Bo,Zheng, Zhuo

supporting information; scheme or table, p. 9191 - 9194 (2010/03/04)

(Chemical Equation Presented) An enantioselective synthesis of chiral alkylphosphonates bearing a β-stereogenic center, based on the Rh-catalyzed asymmetric hydrogenation of corresponding β-substituted β,γ-unsaturated phosphonates with a ferrocene-based monophosphoramidite ligand under the mild hydrogenation conditions, was developed, in which an ee value of up to 98% was obtained.

Enantioselective synthesis of optically active alkanephosphonates via rhodium-catalyzed asymmetric hydrogenation of β-substituted α,β-unsaturated phosphonates with ferrocene-based monophosphoramidite ligands

Duan, Zheng-Chao,Hu, Xiang-Ping,Wang, Dao-Yong,Huang, Jia-Di,Yu, Sai-Bo,Deng, Jun,Zheng, Zhuo

supporting information; experimental part, p. 1979 - 1983 (2009/09/07)

A series of chiral β-substituted alkane-phosphonates was synthesized in high enantioselectivities via the first rhodium-catalyzed asymmetric hydrogenation of the corresponding β-substituted-α,β-unsaturated phosphonates using a ferrocene-derived monophosphoramidite ligand, with which up to 99.5% ee have been achieved for the hydrogenation of (E)-substrates and 98.0% ee for (Z)-substrates.

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