Abstract
The X-ray crystal structure of 2-amino-7-methyl-4-(3-nitrophenyl)-5-oxo-4H,5H-pyrano[4,3-b]pyrano-3- carbonitrile 1, is determined. It is interesting that all the atoms of the pyran ring are coplanar, which is different from that of other similar compounds. The structure is stabilised by intermolecular hydrogen bonds. The structure of the product is also characterised by IR, NMR spectra and elemental analysis.
References
1.
Fisons Ltd., Jpn Kokai Tokkyo Koho JP 5804722, 1983 ; Chem. Abstr. , 98 (1983), 137619b.
2.
Montandon J.B.
,
Zijlstra F. J.
,
Wilson J. H. P.
, Int. J. Tissue React. , 1989 , 11 , 107 .
3.
Brooks G.T.
,
Ottridge A. P.
,
Jennings R. C.
,
Mace D. W.
,
Alexander B. A.
, Pestic. Sci. , 1985 , 16 , 571 ; Chem. Abstr. , 106 (1986), 202243h.
4.
Witte E.C.
,
Neubert P.
,
Roesch A.
, DE 3427985, 1986 ; Chem. Abstr. , 104 (1986), 224915f.
5.
Hyana T.
,
Saimoto H.
, Jpn Kokai Tokkyo Koho JP 62181276, 1987; Chem. Abstr. , 108 (1988 ), 37645p .
6.
Ando T.
,
Yamawaki J.
,
Kawate T.
,
Sumi S.
,
Hanafusa T.
, Bull. Chem. Soc. Jpn. , 1982 , 55 , 2504 .
7.
Clark J.H.
, Chem. Rev. , 1980 , 80 , 429 .
8.
Sheldrick G.M.
, SHELXTL, Structure Determination Software Program. Version 5.10; Bruker Analytical X-ray Systems. Inc. : Madison, WI , 1997 .
9.
Wang X.S.
,
Shi D. Q.
,
Tu S. J.
, and
Yao C. S.
, J. Chem. Cryst. , 2004 , 34 , 159 .
10.
Wang X.S.
,
Shi D. Q.
,
Rong L. C.
,
Yao C. S.
, and
Dai G. Y.
, Chin. J. Struct. Chem. , 2003 , 22 , 331 .
11.
Wang X.S.
,
Shi D. Q.
,
Tu S. J.
, and
Yao C. S.
, Chinese J. Struct. Chem. , 2002 , 21 , 597 .
12.
Wang X.S.
,
Li Y. L.
,
Shi D. Q.
,
Tu S. J.
, Acta Cryst. , 2003 , E59 , o1210 .