1
Q
A
2
Q
A
3
Q
A
X–X
4
Q
A
5
Q
A
6
Q
A
NBS in ROOR or hv
7
Q
A
8
Q
A
9
Q
A
H–X
10
Q
A
11
Q
A
12
Q
A
PBr3
13
Q
A
14
Q
A
15
Q
A
SOCl2 in pyridine
16
Q
A
17
Q
A
18
Q
A
2 Li
19
Q
A
20
Q
A
Mg in ether or THF
21
Q
A
22
Q
A
23
Q
A
24
Q
A
