Welcome to LookChem.com Sign In|Join Free

CAS

  • or

19543-61-4

Post Buying Request

19543-61-4 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

19543-61-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19543-61-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,4 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 19543-61:
(7*1)+(6*9)+(5*5)+(4*4)+(3*3)+(2*6)+(1*1)=124
124 % 10 = 4
So 19543-61-4 is a valid CAS Registry Number.

19543-61-4Relevant articles and documents

The nature of the electronic factor governing diastereofacial selectivity in remotely substituted (X) 2-adamantyl cations: 5-X versus 4-X substitution

Adcock, William,Trout, Neil A.

, p. 791 - 798 (2008/03/13)

A limited series of 4eq-substituted (X) 2-methyleneadamantanes (6, Y=CH2, X=F, Cl, Br, I, and SnMe3) has been synthesized and diastereoselectivities for their hydrochlorination (HCl/CH2Cl 2) have been determined. Diastereoselectivities for the fluorination (DAST/CH2Cl2) of secondary alcohol mixtures, obtained from the hydride reduction of the precursor ketones (6,Y=O) to the alkenes, have also been measured. A comparison of this selectivity data for nucleophilic trapping of 4eq-substituted (X) 2-adamantyl cations (4, R=H and Me) with the corresponding information for 5-substituted (X) 2-adamantyl cations (1, R=H and Me) has revealed important distinctions between the two series. In particular, whereas extended hyperconjugative effects appear to be the predominant electronic effect governing facial selectivity in the 5,2-series, electrostatic influences prevail in the 4,2-disposition. Copyright

Syntheses and NMR Spectra of Substituted 2-tert-Butyladamantan-2-ols

Duddeck, Helmut,Rosenbaum, Doris

, p. 1700 - 1707 (2007/10/02)

The synthesis of a number of substituted 2-tert-butyladamantan-2-ols from the corresponding ketones is described.In addition to these addition reactions, some unexpected rearrangements were observed.Reaction mechanisms are proposed to rationalize the experimental results. 13C NMR spectra of some adamantanes are discussed in terms of substituent interaction effects.

REACTION OF 5-OXO-4-OXAHOMOADAMANTANE WITH THIONYL CHLORIDE

Janku, Josef,Burkhard, Jiri,Vodicka, Ludek

, p. 752 - 755 (2007/10/02)

On reaction with thionyl chloride 5-oxo-4-oxa-homoadamantane gives rise to a mixture of 4a-chloro- and 4e-chloro-2-adamantanone.The carbonyl group of chloroadamantane further reacts with thionyl chloride under formation of 2,2,4e-trichloroadamantane.In the same way adamantanone reacts with thionyl chloride, giving rise to 2,2-dichloroadamantane.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 19543-61-4