Chemistry Reference
In-Depth Information
(CH
2
)
u
Et
OH
O
x H
2
C
SMe
2
(CH2)
u,v,w
B
(CH
2
)
v
Et
BEt
3
-x Me
2
SO
Et
(CH
2
)
w
Et
x=u+v+w
O
Me
Me
Me
Me
x H
2
C
SMe
2
(CH
2
)
x+6
B
B
-x Me
2
SO
Me
Me
Me
Me
(CH
2
)
x+6
O
C
Me
C
Me
H
2
C
CH
BR
2
AlkylBR
2
+
Ph
3
As
CH
2
CH
2
Alkyl
(b)
Isomeriz
Me
Me
+ x(b)
C
BR
2
x+1
C
2
2
Alkyl
HC
Alkyl
HC
Formulas 16.12
Furthermore, CCPs of ''ylides'' need mentioning. The research group of Shea
has extensively explored polymerizations of dimethylsulfonium methylide ((a) in
Formula
16.12
) initiated by aliphatic boranes [
143
-
148
]. The ylide inserts into the
B-C bond and creates a new reactive B-C bond by elimination of dimethylsulf-
oxide, Depending on the work-up procedure OH-terminated linear or star-shaped
