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1108200-12-9

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1108200-12-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1108200-12-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,0,8,2,0 and 0 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1108200-12:
(9*1)+(8*1)+(7*0)+(6*8)+(5*2)+(4*0)+(3*0)+(2*1)+(1*2)=79
79 % 10 = 9
So 1108200-12-9 is a valid CAS Registry Number.

1108200-12-9Relevant articles and documents

Highly efficient synthesis of chiral α-CF3 amines via Rh-catalyzed asymmetric hydrogenation

Jiang, Jun,Lu, Wenxin,Lv, Hui,Zhang, Xumu

, p. 1154 - 1156 (2015/03/14)

Highly enantioselective catalytic asymmetric hydrogenation of α-CF3-enamides has been achieved by employing rhodium-DuanPhos as the catalyst, which provides a readily accessible method for the synthesis of chiral trifluoromethylated amines. The reaction has a broad substrate scope; both aryl- and alkyl-substituted α-CF3-enamides worked smoothly and afford the corresponding chiral amines in high yields and excellent enantioselectivities (up to 99% ee).

Chemoenzymatic dynamic kinetic resolution of α-trifluoromethylated amines: Influence of substitutions on the reversed stereoselectivity

Cheng, Guilin,Xia, Bo,Wu, Qi,Lin, Xianfu

, p. 9820 - 9828 (2013/09/02)

Enzymatic resolution of α-trifluoromethylated amines via kinetic resolution (KR), dynamic kinetic resolution (DKR) employing CALB-Pd/Al 2O3, and a one-pot sequential process of KR/DKR/KR was investigated comparatively for the first time. Although CALB-catalyzed KR of α-trifluoromethylated amines with substituents of methyl (1a), isopropyl (1c), phenyl (1d) and benzyl group (1e) can provide good stereoselectivity factors E from 31 to >200 respectively, DKR and sequential process of KR/DKR/KR possess better practical application potential because of the higher conversion (62%-84%) and the similar enantiomeric excesses (90%-99%). The enantiopreference and inversion for the α-trifluoromethylated amines displayed by CALB were observed and explained by docking modes. Namely, for 1,1,1-trifluoro-2-propylamine (1a), the product amide with R-configuration was obtained, and the enantiopreference was converted to S for the amines (1b-1e) with substituents larger than methyl group. The catalysts recycle, and scale-up experiments were demonstrated successfully. All these results indicated the high efficiency and green feature of this enzymatic process, and its application significance.

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