Antioxidant BHT 264
CAS:128-37-0
Purity:99%
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Product Details
The present specification provides an an...
The present invention describes carbazol...
The invention provides an anthracene-typ...
Triisopropyl borate
4-bromo-9,9-diphenyl-9H-fluorene
(9,9-diphenyl-9H-fluoren-4-yl)boronic acid
Conditions | Yield |
---|---|
4-bromo-9,9-diphenyl-9H-fluorene;
With
n-butyllithium;
In
tetrahydrofuran;
at -78 ℃;
for 1h;
Inert atmosphere;
Triisopropyl borate;
In
tetrahydrofuran;
at -78 - 20 ℃;
|
76% |
(9,9-diphenyl-9H-fluoren-4-yl)boronic acid
Conditions | Yield |
---|---|
With
n-butyllithium;
In
tetrahydrofuran;
at -78 ℃;
for 5h;
With
hydrogenchloride;
In
tetrahydrofuran;
|
88% |
With
n-butyllithium;
In
tetrahydrofuran; hexane;
at -78 ℃;
for 2.5h;
In
tetrahydrofuran; hexane;
at -78 - 20 ℃;
for 18h;
|
78% |
Triisopropyl borate
4-bromo-9,9-diphenyl-9H-fluorene