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57794-08-8

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57794-08-8 Usage

Chemical Properties

white to off-white crystals

Uses

(1S,2S)-trans-1,2-Cyclohexanediol may be used in the preparation of (1S,2S)-1,2-cyclohexanediyl bis(4-vinylbenzoate) by reacting with 4-vinylbenzoyl chloride. It may also be used as a chiral ligand for the preparation of non-racemic hydroxy phosphonates via titanium alkoxide-catalyzed addition of dimethyl phosphite to the corresponding aldehydes.

Purification Methods

The enantiomers have been recrystallised from *C6H6 or EtOAc. The (±) diol has been resolved via the distrychnine salt of the hemisulfate [Hayward et al. J Chem Soc Perkin Trans 1 2413 1976], or the 1-menthoxy acetates. {l-trans-diastereoisomer has m 64o, []D -91.7o (c 1.4 EtOH) from pet ether or aqueous EtOH and yields the (-)-trans-diol } and {d-trans-diastereoisomer has m 126-127o, []D -32.7o (c 0.8 EtOH) from pet ether or aqueous EtOH and yields the (+)-trans diol}. The bis-4-nitrobenzoate has m 126.5o []D (-) and (+) 25.5o (c 1.1 CHCl3), and the bis-3,5-dinitrobenzoate has m 160o []D ± 83.0o (c 1.8 CHCl3) [Wilson & Read J Chem Soc 1269 1935]. [Beilstein 6 III 4060.]

Check Digit Verification of cas no

The CAS Registry Mumber 57794-08-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,9 and 4 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 57794-08:
(7*5)+(6*7)+(5*7)+(4*9)+(3*4)+(2*0)+(1*8)=168
168 % 10 = 8
So 57794-08-8 is a valid CAS Registry Number.

57794-08-8 Well-known Company Product Price

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  • Aldrich

  • (421804)  (1S,2S)-trans-1,2-Cyclohexanediol  99%

  • 57794-08-8

  • 421804-250MG

  • 830.70CNY

  • Detail
  • Aldrich

  • (421804)  (1S,2S)-trans-1,2-Cyclohexanediol  99%

  • 57794-08-8

  • 421804-1G

  • 2,436.64CNY

  • Detail

57794-08-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name (1S,2S)-cyclohexane-1,2-diol

1.2 Other means of identification

Product number -
Other names 1R,2R-cyclohexanediol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:57794-08-8 SDS

57794-08-8Relevant articles and documents

Enantiotopic Discrimination by Coordination-Desymmetrized meso-Ligands

Li, Yutang,Lidskog, Anna,Armengol-Relats, Helena,Pham, Thanh Huong,Favraud, Antoine,Nicolas, Maxime,Dawaigher, Sami,Xiao, Zeyun,Ma, Dayou,Lindb?ck, Emil,Strand, Daniel,W?rnmark, Kenneth

, p. 1575 - 1579 (2020/02/04)

The first examples of enantiopure catalysts that are chiral merely due to coordination of different metal ions at enantiotopic positions of an achiral meso-ligand are reported. These catalysts exhibit a pseudo-Cs symmetry and are able to catalyze reactions demanding simultaneous involvement of two catalytic sites. The latter was demonstrated by application in the asymmetric ring-opening of meso-epoxides.

Olefin reaction in the catalyst and the olefin production

-

Paragraph 0147; 0149, (2020/10/31)

PROBLEM TO BE SOLVED: To provide a catalyst for obtaining an olefin in high selectivity with a vicinal diol as a raw material.SOLUTION: A catalyst for olefination reaction for use in a reaction to produce an olefin by a reaction of a polyol, having two adjacent carbon atoms each having a hydroxy group, with hydrogen comprises: a carrier; at least one oxide selected from the group consisting of oxides of the group 6 elements and oxides of the group 7 elements supported on the carrier; and at least one metal selected from the group consisting of silver, iridium, and gold supported on the carrier.SELECTED DRAWING: None

Epoxidation of cyclohexene with H2O2 over efficient water-tolerant heterogeneous catalysts composed of mono-substituted phosphotungstic acid on co-functionalized SBA-15

Jin, Manman,Niu, Qingtao,Guo, Zhenmei,Lv, Zhiguo

, (2019/07/31)

A series of Keggin-type heteropolyacid-based heterogeneous catalysts (Co-/Fe-/Cu-POM-octyl-NH3-SBA-15) were synthesized via immobilized transition metal mono- substituted phosphotungstic acids (Co-/Fe-/Cu-POM) on octyl-amino-co-functionalized mesoporous silica SBA-15 (octyl-NH2-SBA-15). Characterization results indicated that Co-/Fe-/Cu-POM units were highly dispersed in mesochannels of SBA-15, and both types of Br?nsted and Lewis acid sites existed in Co-/Fe-/Cu-POM-octyl-NH3-SBA-15 catalysts. Co-POM-octyl-NH3-SBA-15 catalyst showed excellent catalytic performance in H2O2-mediated cyclohexene epoxidation with 83.8% of cyclohexene conversion, 92.8% of cyclohexene oxide selectivity, and 98/2 of epoxidation/allylic oxidation selectivity. The order of catalytic activity was Co-POM-octyl-NH3-SBA-15?>?Fe-POM-octyl-NH3-SBA-15?>?Cu-POM-octyl-NH3-SBA-15. In order to obtain insights into the role of -octyl moieties during catalysis, an octyl-free catalyst (Co-POM-NH3-SBA-15) was also synthesized. In comparison with Co-POM-NH3-SBA-15, Co-POM-octyl-NH3-SBA-15 showed enhanced catalytic properties (viz. activity and selectivity) in cyclohexene epoxidation. Strong chemical bonding between -NH3 + anchored on the surface of SBA-15 and heteropolyanions resulted in excellent stability of Co-POM-octyl-NH3-SBA-15 catalyst, and it could be reused six times without considerable loss of activity.

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