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39664-88-5

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39664-88-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39664-88-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,6,6 and 4 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 39664-88:
(7*3)+(6*9)+(5*6)+(4*6)+(3*4)+(2*8)+(1*8)=165
165 % 10 = 5
So 39664-88-5 is a valid CAS Registry Number.

39664-88-5Relevant articles and documents

Aminophosphine phosphinites derived from chiral 1,2-diphenyl-2-aminoethanols: Synthesis and application in rhodium-catalyzed asymmetric hydrogenation of dehydroamino acid derivatives

Lou, Rongliang,Mi, Aiqiao,Jiang, Yaozhong,Qin, Yong,Li, Zhi,Fu, Fangmin,Chan, Albert S.C

, p. 5857 - 5863 (2000)

A series of chiral aminophosphine phosphinites DPAMPPs was synthesized from optically active 1,2-diphenyl-2-aminoethanols. The erythro-DPAMPPs were found to serve as excellent ligands for rhodium-catalyzed asymmetric hydrogenation of dehydroamino acid derivatives. For an array of dehydroamino acid precursors, remarkably high enantioselectivity (up to 98.4% e.e.) and reactivity (the ratio of substrate/catalyst up to 10000) were observed. Some factors controlling the enantioselectivity were examined and discussed. (C) 2000 Elsevier Science Ltd.

Enzyme-Catalyzed Reactions, 8. - Stereoselective Synthesis of 2-Amino Alcohols from (R)- and (S)-Cyanohydrins

Effenberger, Franz,Gutterer, Beate,Ziegler, Thomas

, p. 269 - 273 (2007/10/02)

erythro-2-Amino alcohols (1R,2S)- and (1S,2R)-4 may be synthesized stereoselectively by addition of Grignard compounds to cyanohydrins (R)-, (S)-1 and their O-trimethylsilyl derivatives 3, respectively, followed by hydrogenation.The threo-2-amino alcohols (1S,2S)- and (1R,2R)-4 are easily accessible by inversion at C-1 of the (1R,2S) and (1S,2R) compounds.

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