17697-12-0 Usage
Chemical Properties
WHITE TO LIGHT BEIGE POWDER
Uses
Benzeneseleninic acid anhydride was used to oxidize hydrazines to afford azo-compounds.
General Description
Oxidation of phenols by benzeneseleninic acid anhydride yields ortho-quinones. Benzeneseleninic anhydride acts as a mild oxidant for the conversion of benzylic hydrocarbons into aldehydes or ketones.
Purification Methods
When the anhydride is recrystallised from *C6H6 it has m 124-126o, but when this is heated at 140o/1hour in a vacuum or at 90o/2hours it has m 164-165o and gives a solid m 124-126o when then recrystallised from *C6H6. Both depress the melting point of the acid PhSeO2H. If the high melting anhydride is dissolved in *C6H6 and seeded with the high melting anhydride, the high melting anhydride crystallises out. It readily absorbs H2O to form the acid (PhSeO2H, m 122-124o). Because of this the commercial anhydride could contain up to 30% of the acid. It is best purified by converting to the HNO3 complex (m 112o) and heating this in vacuo at 120o/72hours to give the anhydride as a white powder m 164-165o. Alternatively heat the anhydride in vacuo at 120o/72 hours until the IR shows no OH band. [Ayvrey et al. J Chem Soc 2089 1962, Barton et al. J Chem Soc, Perkin Trans 1 567 1977, Beilstein 11 H 422, 11 I 110, 11 III 716, 11 IV 708.] TOXIC solid.
Check Digit Verification of cas no
The CAS Registry Mumber 17697-12-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,9 and 7 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 17697-12:
(7*1)+(6*7)+(5*6)+(4*9)+(3*7)+(2*1)+(1*2)=140
140 % 10 = 0
So 17697-12-0 is a valid CAS Registry Number.
InChI:InChI=1/C12H10O3Se2/c13-16(11-7-3-1-4-8-11)15-17(14)12-9-5-2-6-10-12/h1-10H
17697-12-0Relevant articles and documents
Paetzold et al.
, p. 53,60 (1967)
Preparation of the First Organoselenium Peroxide, t-Butyl Benzeneperoxyseleninate
Bloodworth, A. J.,Lapham, David J.
, p. 471 - 474 (2007/10/02)
t-Butyl benzeneperoxyseleninate, PhSe(O)OOBut, has been prepared by the reaction of t-butyl hydroperoxide with PhSe(O)OSe(O)Ph or PhS(O)OEt, and of sodium t-butyl peroxide with PhSe(O)Br.Formation of the less stable analogues p-MeC6H4Se(O)OOBut and BuSe(O)OOBut from t-butyl hydroperoxide and the corresponding seleninyl anhydrides has been confirmed by 13C n.m.r. spectroscopy.
