1123 
Nitration of toluene. é 
JT 5 z TE = 
4 tm to 
a —s ‘ty 
é=— 30 £0 | f= 30 
vere 
found | calc. found calc. found. calc. found. calc. | 
para | 39.3 | 38.7 | 38.1 | 37.6 | 36.8 | 36.6 | 35.3 | 35.7 | 
ortho | 57.2 58.6 58.0 58.6 58.8 58.5 | 50.6 58.2 
| | 
meta| 3.5| 2.7| 3.9) 3.8| 4.4] 4.9] 5.1] 6.1 
If we extend the investigation to the introduction of a third sub- 
stituent in the twice substituted benzene, we get: 
Nitration of m-chlor-benzoic acid. ') 
== 1290 
| | 
‚found, calc. found calc. | 
| a (1,3,6)| 93 | 93.5] 92 | 91.5 | 
| | 
LRE AN ee ef EEN 
| | | 
Nitration of m-brom-benzoic acid. 
found calc. found calc. | 
a (1,3,6)| 89 -89.2\ 87 | 86.8 
Bala, Dye? Abst, 1028, |) 43 | 13.2 
Nitration of m-dichlor-benzene. 
found calc. found calc. 
| | aa | | | 
| a (1,3,6) | 97.4 | 97.3 | 96.2 | 96.4 
GR Oe | oy tes See) ee 
| | 
1) In these tables the place of carboxyle is indicated by 1. 
