Global Information Lookup Global Information

Cornforth reagent information


Cornforth reagent
Names
Other names
Pyridinium dichromate
Identifiers
CAS Number
  • 20039-37-6 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:176796
ChemSpider
  • 2006289 checkY
ECHA InfoCard 100.039.511 Edit this at Wikidata
EC Number
  • 243-478-8
PubChem CID
  • 2724130
UNII
  • Y7AV7UFN7K checkY
CompTox Dashboard (EPA)
  • DTXSID60889393 Edit this at Wikidata
InChI
  • InChI=1S/2C5H5N.2Cr.7O/c2*1-2-4-6-5-3-1;;;;;;;;;/h2*1-5H;;;;;;;;;/q;;;;;;;;;2*-1/p+2 ☒N
    Key: LMYWWPCAXXPJFF-UHFFFAOYSA-P ☒N
  • InChI=1/2C5H5N.2Cr.7O/c2*1-2-4-6-5-3-1;;;;;;;;;/h2*1-5H;;;;;;;;;/q;;;;;;;;;2*-1/p+2/r2C5H5N.Cr2O7/c2*1-2-4-6-5-3-1;3-1(4,5)9-2(6,7)8/h2*1-5H;/q;;-2/p+2
    Key: LMYWWPCAXXPJFF-OXLJHMOQAP
SMILES
  • [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O.c1cc[nH+]cc1.[nH+]1ccccc1
Properties
Chemical formula
C10H12N2Cr2O7
Molar mass 376.2 g/mol
Appearance orange to brown solid[1]
Boiling point 145 to 147 °C (293 to 297 °F; 418 to 420 K)[1]
Solubility in water
soluble in water[1]
Hazards
GHS labelling:
Pictograms
GHS02: FlammableGHS03: OxidizingGHS05: CorrosiveGHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Signal word
Danger
Hazard statements
H228, H272, H314, H315, H317, H319, H350, H410
Precautionary statements
P201, P202, P210, P220, P221, P240, P241, P260, P261, P264, P272, P273, P280, P281, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P321, P332+P313, P333+P313, P337+P313, P362, P363, P370+P378, P391, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references

The pyridinium dichromate (PDC) or Cornforth reagent is a pyridinium salt of dichromate with the chemical formula [C5H5NH]2[Cr2O7]. This compound is named after the Australian-British chemist Sir John Warcup Cornforth (b. 1917) who introduced it in 1962.[2][3] The Cornforth reagent is a strong oxidizing agent which can convert primary and secondary alcohols to aldehydes and ketones respectively. In its chemical structure and functions it is closely related to other compounds made from hexavalent chromium oxide, such as pyridinium chlorochromate and Collins reagent. Because of their toxicity, these reagents are rarely used nowadays.[4]

  1. ^ a b c Pyridinium dichromate, MSDS, Alfa Caesar
  2. ^ Alexander Senning Elsevier's dictionary of chemoetymology: the whies and whences of chemical nomenclature and terminology, Elsevier, 2007, ISBN 0-444-52239-5 p. 94
  3. ^ Cornforth, R.H.; Cornforth, J.W.; Popjak, G. (1962). "Preparation of R-and S-mevalonolactones". Tetrahedron. 18 (12): 1351–4. doi:10.1016/S0040-4020(01)99289-0.
  4. ^ G. Tojo; M. Fernâandez (2006). Oxidation of alcohols to aldehydes and ketones: a guide to current common practice. New York: Springer. pp. 28, 29, 86. ISBN 0-387-23607-4.

and 19 Related for: Cornforth reagent information

Request time (Page generated in 0.7984 seconds.)

Cornforth reagent

Last Update:

The pyridinium dichromate (PDC) or Cornforth reagent is a pyridinium salt of dichromate with the chemical formula [C5H5NH]2[Cr2O7]. This compound is named...

Word Count : 766

List of reagents

Last Update:

This is a list of inorganic and organic reagents commonly used in chemistry. Reagents are "substances or compounds that are added to a system in order...

Word Count : 264

John Cornforth

Last Update:

Wikimedia Commons has media related to Geobiography of John Cornforth. Sir John Warcup Cornforth Jr., AC, CBE, FRS, FAA (7 September 1917 – 8 December 2013)...

Word Count : 2652

PDC

Last Update:

Phosducin, a human protein and gene in the retina Pyridinium dichromate (Cornforth reagent), a chromium-based oxidant Pyruvate dehydrogenase complex, an enzyme...

Word Count : 256

List of inorganic compounds named after people

Last Update:

Collman's reagent (Na2Fe(CO)4) Collins reagent (CrO3 / py / CH2Cl2) Condy's crystals (KMnO4) Corey–Chaykovsky reagent (O=S(CH2)Me2) Cornforth reagent ([pyH]2[Cr2O7])...

Word Count : 852

Asymmetric induction

Last Update:

in conflict with each other. Models have been devised by Cram (1952), Cornforth (1959), Felkin (1969) and others. The Cram's rule of asymmetric induction...

Word Count : 3674

List of organic reactions

Last Update:

Well-known reactions and reagents in organic chemistry include Contents:  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also External links 1...

Word Count : 3433

Permanganate

Last Update:

Organic Syntheses. 5: 845; Collected Volumes, vol. 43, p. 87. J. W. Cornforth (1951). "Ethyl pyruvate". Organic Syntheses. 4: 467; Collected Volumes...

Word Count : 1063

Bisulfite

Last Update:

"Pseudoionone". Organic Syntheses; Collected Volumes, vol. 3, p. 747. Cornforth, J. W. (1963). "Ethyl Pyruvate". Organic Syntheses; Collected Volumes...

Word Count : 1062

Amyl nitrite

Last Update:

Journal of Organic Chemistry. 55 (8): 2543–2545. doi:10.1021/jo00295a056. Cornforth J, Kumar A, Stuart AS (1987). "Synthesis of substituted dibenzophospholes...

Word Count : 1743

Index of chemistry articles

Last Update:

Walker John Bennett Fenn John Howard Northrop John Pople John Warcup Cornforth Jöns Jakob Berzelius Joseph Priestley joule per kilogram-kelvin Justus...

Word Count : 1946

List of chemists

Last Update:

(1912–1971), American chemist, co-discovered the element promethium John Cornforth (1917–2013), Australian winner of the 1975 Nobel Prize in Chemistry Brigid...

Word Count : 7444

Fritz Haber

Last Update:

adsorption effects, electrochemistry, and free radical research (see Fenton's reagent). A large part of his work from 1911 to 1933 was done at the Kaiser Wilhelm...

Word Count : 7282

Chiral drugs

Last Update:

1007/s002280100320. ISSN 0031-6970. PMID 11599654. S2CID 7417671. Cornforth, R.H; Cornforth, J.W (1996). "How to be right and wrong". Croat. Chem. Acta. 69:...

Word Count : 4547

Dimethyl sulfoxide

Last Update:

Retrieved 26 May 2007. Matthews WS, Bares JE, Bartmess JE, Bordwell FG, Cornforth FJ, Drucker GE, Margolin Z, McCallum RJ, McCollum GJ, Vanier NR (1975)...

Word Count : 3970

Vitamin B12 total synthesis

Last Update:

(−)-camphor by a strategy conceived and used earlier by A. Pelter and J. W. Cornforth in 1961. At ETH, the synthesis of the B-C-component involved the implementation...

Word Count : 7466

Davy Medal

Last Update:

and Marie Curie "for their researches on radium" and in 1968 to John Cornforth and George Joseph Popják [Wikidata] "in recognition of their distinguished...

Word Count : 2894

List of Nobel laureates in Chemistry

Last Update:

Grignard (1871–1935)  France "for the discovery of the [...] Grignard reagent" Paul Sabatier (1854–1941)  France "for his method of hydrogenating organic...

Word Count : 3452

List of nominees for the Nobel Prize in Chemistry

Last Update:

work in thermochemistry” “for the discovery of the so-called Grignard reagent, which in recent years has greatly advanced the progress of organic chemistry”...

Word Count : 12268

PDF Search Engine © AllGlobal.net