(), . 1930- ..
- -, - - C6H5X .
, HNO3/Ac2O 27 , 58.1% -, 38.2% - 3.7% -.
, -
- -, :
( 9.3.1):
9.3.1
, . - () () . . , . , .
-, - -, . - . - , .
- (Sf), f/f :.
Sf, f, , - , . Sf f .7.
7 - , Sf (-)
k | f | Sf | k | f | Sf | ||
Br2 AcOH | 2.644 | HNO3 CH3NO2 | 20.5 | 45.7 | 1.363 | ||
Cl2 AcOH | 2.219 | C6H5SO2Cl, AlCl3 | 7.7 | 30.2 | 1.160 | ||
CH3COCl+AlCl3 | 2.195 | - (CH3)3CBr, GaBr3, | 1.6 | 6.6 | 0.625 |
Br2 AcOH (CH3)3Br GaBr3 ( -), f Sf .
(. 50-51), () . σ-. , .
|
|
, , π-. , .. . , . : ( ) .