Abstract
In this paper, 18 symmetric hydrazo compounds undergo rapid oxidation to corresponding azo compounds using NaNO2/NaHSO4•H2O/SiO2 as a novel oxidising agent under mild conditions for the first time.
References
1.
Russ H. W.
and
Tappe H.
, Eur. Pat. Appl. EP. , 1994 , 629 , 627 .
2.
lkeda T.
and
Tsutumi O.
, Science , 1995 , 268 , 1873 .
3.
Campbell D.
,
Dix L. R.
, and
Rostron P.
, Dyes Pigm. , 1995 , 29 , 77 .
4.
Sefkow M.
and
Kattz H.
, Tetrahedron letters. , 1999 , 40 , 6561 .
5.
Liu Z.F.
,
Hashimoto O.K.
and
Fujishima A.
, Nature , 1990 , 347 , 658 .
6.
Wang
C.-L.
,
Wang
X.-X.
and
Wang Y.-L.
, Synth. Commun. , 1999 , 38 (B), 964 .
7.
Wang
C.-L.
,
Wang
Y.-L.
,
Wang
X.-X.
,
Li
J.-P.
and
Wang H.
, J. Chin. Chem. Soc. , 1999 , 46 , 131 .
8.
Wang
X.-Y.
,
Wang
Y.-L.
,
Li
J.-P.
,
Duan
Z.-F.
and
Zhang Z.-Y.
, Synth. Commun. , 1999 , 29 , 2271 .
9.
Zolfigol M.A.
and
Madrakian E.
, Indian. J. Chem. , 2000 , 39B , 308 .
10.
Zolfigol M.A.
,
Zebarjadium M.H.
,
Chehardoli G.
,
Mallakpour S.E.
and
Shamsipur M.
, Tetrahedron , 2001 , 57 , 1627 .
11.
Heibron I.
and
Bunbury H.M.
, Dictionary of Organic Compounds , 5th Edn., Chapman and Hall, London 1982 .