346 Mr Crocker, On the formation of Di-nitro-phenoxazines. 
I. ’1266 gm. gave 21-8 c.c. N at 20° and 757 bar. pr. 
II. *2127 
>» 
*3370 C0 2 and *0420 H 2 0. 
I. 
II. Calc. 
Carbon 
— 
43*20 43*30 
Hydrogen 
— 
2*16 1*80 
Nitrogen 
19*80 
— 19*68 
Amidol represents a limiting case, where the influence of the 
second amido-group prevents the usual condensation taking place, 
except to a slight extent ; the condensation however being subse- 
quently effected by weakly alkaline reagents. 
Incidentally the reaction of picric chloride and alkali on 
amido-thymol was examined. Only one picryl group entered, the 
phenol OH, as might be expected, remaining intact. 
Amido-thymol (CH 3 : NH 2 : C 3 H 7 : OH = 1 : 2 : 4 : 5). 
One molecular proportion each of picric chloride and amido- 
thymol were separately dissolved in hot dilute alcohol. Two 
molecular proportions of soda in dilute alcohol were now added 
rapidly, stirring meanwhile. The solution was now diluted with 
an equal volume of water and allowed to cool, when minute 
bronze-coloured plates separated out together with a little “ tar.” 
These were filtered and washed with dilute alcohol. Crystallised 
from a mixture of acetic and alcohol, a reddish bronze crystalline 
powder separated out, melting at 209°. On drying at 150° a 
purple-brown powder was obtained and the M.P. was raised to 212°. 
The substance was easily soluble in alcohol or acetic acid. Soda 
easily dissolved it to a red solution which darkened to reddish- 
brown. Hence the hydroxyl group was probably intact. Crystal- 
lised from strong alcohol the substance was obtained as dark-red 
needles. A nitrogen determination shewed it to be the expected 
substance picramido-thymol. 
I. T786 substance gave 23*2 c.c. N at 18° C. and 752 bar. pr. 
II. *2770 „ „ 35*9 ,, 17° „ 751 bar. pr. 
I. II. Calc. 
Nitrogen 14*94 14*94 14*89 
Calculated for C 6 H 2 (CH S ) (C 3 H 7 ) (OH) NH . C 6 H 2 (N0 2 ) 3 . 
