Antioxidant BHT 264
CAS:128-37-0
Purity:99%
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Product Details
A high triplet energy host (SPPO11) with...
4-Bromo-9,9′-spirobifluorene is facilely...
Using a 1-anthracen-9-yl-pyrene (AP) dua...
The present invention provides an organi...
The invention provides an aromatic amine...
The present invention provides a contain...
The invention relates to a method for sy...
9-fluorenone
2,2'-dibromobiphenyl
![4-bromo-9,9’-spirobi[9H-fluorene]](/upload/2025/1/8eb1fdad-eacd-4bf3-acda-650ecf590a26.png)
4-bromo-9,9’-spirobi[9H-fluorene]
| Conditions | Yield |
|---|---|
|
2,2'-dibromobiphenyl;
With
n-butyllithium;
In
tetrahydrofuran; hexane;
at -78 ℃;
for 0.5h;
Inert atmosphere;
9-fluorenone;
In
tetrahydrofuran; hexane;
at -78 - 20 ℃;
With
hydrogenchloride; acetic acid;
In
tetrahydrofuran; hexane; water;
for 2h;
Reflux;
|
98% |
|
2,2'-dibromobiphenyl;
With
n-butyllithium;
In
tetrahydrofuran; hexane;
at -78 ℃;
for 0.5h;
Inert atmosphere;
9-fluorenone;
In
tetrahydrofuran;
at -78 ℃;
for 0.5h;
Inert atmosphere;
With
acetic acid;
In
water;
for 2h;
Reflux;
|
98% |
|
2,2'-dibromobiphenyl;
With
n-butyllithium;
In
tetrahydrofuran; n-heptane;
at -78 ℃;
for 1h;
9-fluorenone;
In
tetrahydrofuran; n-heptane;
at -78 - 20 ℃;
|
90% |
|
2,2'-dibromobiphenyl;
With
n-butyllithium;
In
tetrahydrofuran;
at -78 ℃;
9-fluorenone;
at -78 - 20 ℃;
With
hydrogenchloride; acetic acid;
In
water;
at 70 ℃;
|
75% |
|
2,2'-dibromobiphenyl;
With
n-butyllithium;
In
tetrahydrofuran;
at -78 ℃;
for 0.5h;
9-fluorenone;
In
tetrahydrofuran;
at -78 - 20 ℃;
Inert atmosphere;
With
hydrogenchloride;
In
water; acetic acid;
for 12h;
Reflux;
|
50% |
9-(2’-bromobiphenyl-2-yl)-9H-fluoren-9-ol
4-bromo-9,9’-spirobi[9H-fluorene]
| Conditions | Yield |
|---|---|
|
With
hydrogenchloride; acetic acid;
In
water;
for 12h;
Reflux;
|
86% |
|
With
hydrogenchloride; acetic acid;
In
water;
for 2h;
Inert atmosphere;
Reflux;
|
83% |
|
With
hydrogenchloride; acetic acid;
In
water;
for 12h;
Reflux;
|
|
|
With
toluene-4-sulfonic acid; acetic acid;
for 2h;
Concentration;
Inert atmosphere;
Reflux;
|
175 g |
9-(2’-bromobiphenyl-2-yl)-9H-fluoren-9-ol
9-fluorenone
2,2'-dibromobiphenyl
2-Bromobiphenyl
2-(9,9'-spirobi[fluoren]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
C31H18BrCl
N,N,N',N'-tetraphenylspiro(cyclopenta[def]fluorene-1,5,9',9''-bifluorene)-2',7'-diamine
4-phenyl-9,9'-spirobi[fluorene]
