urbaf2

552 CHEMISTRY AND TECHNOLOGY OF EXPLOSIVES

They are di-, tri- and tetra-nitro compounds (I), (II) and (III) respectively:

I II

m. p. 132-134°C m. p. 156°C

III

m. p. 286°C

(G. M. Robinson and R. Robinson [13], Gosh [14], Heertjes, Dahmen and

Wierda [ 11).

Hackel and Kuboszek [16] prepared tri- and tetra-nitro derivatives of l,2-pro-

pylenedioxybenzene, (IV) and (V) respectively:

IV V

m. p. 170°C m. p. 185°C

VI

m. p. 105-107°C

VII

m. p. 196-197°C