STABILISATION OF CONDENSED SELENIUM HETEROCYCLES BY A NITRO GROUP IN THE ORTHO-POSITION TO THE CHALCOGEN.

Article abstract of DOI:10.1016/S0040-4020(01)86508-X

The synthesis of the 7-nitro-2-phenyl-1,2-benzisoselenazol-3(2H)-one 3a leads to an abnormal behavior due to a dipole stabilisation between the nitro group and the selenium atom.The first ever synthesis of a 2,1-benzoxaselenol-3-one 5 is described.The une