Intramolecular thioacyl hydroboration: synthesis of [W(η2-S2CR)(CO)2{ η3-HB(pz)2(SCH2R)}] (pz = pyrazol-1-yl, R = C6H4Me-4)
Abstract
The sequential treatment of [W(![[triple bond, length as m-dash]](https://www.rsc.org/images/entities/char_e002.gif)
CR)Br(CO)
4
]
(R = C
6
H
4
Me-4) with sulfur and
K[H
n
B(pz)
4 - n
] (n = 1 or 2;
pz = pyrazol-1-yl) provided
[W(η
2
-S
2
CR)(CO)
2
{HB(pz)
3
}] or
[W(η
2
-S
2
CR)(CO)
2
{η
3
-HB(pz)
2
(SCH
2
R)}], the latter via
an unusual reduction of the alkylidyne–tungsten linkage.
CR)Br(CO)
4
]
(R = C
6
H
4
Me-4) with sulfur and
K[H
n
B(pz)
4 - n
] (n = 1 or 2;
pz = pyrazol-1-yl) provided
[W(η
2
-S
2
CR)(CO)
2
{HB(pz)
3
}] or
[W(η
2
-S
2
CR)(CO)
2
{η
3
-HB(pz)
2
(SCH
2
R)}], the latter via
an unusual reduction of the alkylidyne–tungsten linkage.
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