HuagongsheHuagongshe Chemistry Print Report · For research reference only
3-(Trimethylsilyl)ethynylbenzaldehyde → 5,5'-(Hexafluoroisopropylidene)bis[1-phenyl-2-(3-ethynylphenyl)benzimidazole]
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 3-(Trimethylsilyl)ethynylbenzaldehyde | HCID 2771642 | — |
| Reactant | 2,2-Bis(3-amino-4-anilinophenyl)hexafluoropropane | HCID 14205049 | — |
| Reactant | Sodium Bisulfite | HCID 23665763 | — |
| Solvent | Water ethanol | HCID 19096565 | — |
| Product | 5,5'-(Hexafluoroisopropylidene)bis[1-phenyl-2-(3-ethynylphenyl)benzimidazole] | HCID 23322967 | — |
Reaction Steps
The exact procedure described above (high dilution and dropwise addition) was repeated for 26.0 g of the aldehyde (VI), 110 g of sodium bisulfite, 30.0 g of the tetramine (V) in a total volume of 4.5 L of 1:5 water-ethanol. At the end, the powdery end product (VIII) was fractionated by Soxhlet extraction into an ether-insoluble portion (high oligomers) and an ether-soluble portion (20.0 g, 46.9%). The latter material, when tested on the Kofler hot bench at 250° C., showed a gel time of about 3 minutes.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04537974 |
| Source dataset | uspto-grants-1985_08 |
| ORD ID | ord-ff917ac33cf84514945d5bf951a99ca3 |
| Source note | uspto-grants-1985_08 |