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30309-80-9

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30309-80-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 30309-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,3,0 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 30309-80:
(7*3)+(6*0)+(5*3)+(4*0)+(3*9)+(2*8)+(1*0)=79
79 % 10 = 9
So 30309-80-9 is a valid CAS Registry Number.

30309-80-9Relevant articles and documents

Enantiodivergent Kinetic Resolution of 1,1′-Biaryl-2,2′-Diols and Amino Alcohols by Dipeptide-Phosphonium Salt Catalysis Inspired by the Atherton–Todd Reaction

Chen, Yuan,Fang, Siqiang,Pan, Jianke,Ren, Xiaoyu,Tan, Jian-Ping,Wang, Tianli,Zhang, Hongkui

supporting information, p. 14921 - 14930 (2021/05/10)

A highly enantiodivergent organocatalytic method is disclosed for the synthesis of atropisomeric biaryls via kinetic resolution inspired by a dipeptide-phosphonium salt-catalyzed Atherton–Todd (A-T) reaction. This flexible approach led to both R- and S-enantiomers by fine-tuning of bifunctional phosphonium with excellent selectivity factors (s) of up to 1057 and 525, respectively. The potential of newly synthesized O-phosphorylated biaryl diols was illustrated by the synthesis of axially chiral organophosphorus compounds. Mechanistic investigations suggest that the bifunctional phosphonium halide catalyst differentiates between the in-situ-generated P-species in the A-T process, mainly involving phosphoryl chloride and phosphoric anhydride, thus leading to highly enantiodivergent O-phosphorylation reactions. Furthermore hydrogen bonding interactions between the catalysts and phosphorus molecules were crucial in asymmetric induction.

Synthesis of benzyl sulfidesviasubstitution reaction at the sulfur of phosphinic acid thioesters

Nishiyama, Yoshitake,Hosoya, Takamitsu,Yoshida, Suguru

, p. 5771 - 5774 (2020/06/03)

An ambident electrophilicity of phosphinic acid thioesters is disclosed. Unexpected carbon-sulfur bond formation took place in the reaction between phosphinic acid thioesters and benzyl Grignard reagents. The developed method for benzyl sulfides has a wide substrate scope and was applicable for the synthesis of a drug analog.

Copper mediated C(sp2)-H amination and hydroxylation of phosphinamides

Sun, Shang-Zheng,Shang, Ming,Xu, Hui,Cheng, Tai-Jin,Li, Ming-Hong,Dai, Hui-Xiong

supporting information, p. 1444 - 1447 (2020/02/11)

Copper mediated C(sp2)-H amination and hydroxylation of arylphosphinic acid are accomplished by adopting phosphinamide as the directing group. This method is distinguished by its wide substrate scope and excellent functional group tolerance, th

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