HuagongsheHuagongshe Chemistry Print Report · For research reference only
Cumene → Cyclopenta-1,3-diene;hafnium(4+);dichloride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Cumene | HCID 7406 | — |
| Reactant | Aluminum | HCID 5359268 | — |
| Reactant | Aluminum(III) Chloride | HCID 6451240 | — |
| Reactant | Hafnium chloride (HfCl4) (6CI,8CI); Hafnium chloride; Hafnium tetrachloride; Hafnium(IV) chloride; Hafnium chloride (HfCl4), (T-4)- | HCID 9927068 | — |
| Catalyst | Bis(eta-cyclopentadienyl) iron | HCID 7611 | — |
| Product | Cyclopenta-1,3-diene;hafnium(4+);dichloride | HCID 21904050 | 137.6% |
Reaction Steps
In accordance with the procedure of Example 5, 4.3 g (0.0134 mol) of hafnium tetrachloride are added at 55° C. under nitrogen over 30 minutes to a stirred mixture of 56 g of cumene, 5 g (0.027 mol) of ferrocene, 4.8 g (0.0358 mol) of aluminium chloride and 0.12 g (0.0045 mol) of aluminium powder. Working up is effected as in Example 4, affording 3.5 g (68.6% of theory) of hafnocene dichloride which melts at 228°-230° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04992572 |
| Source dataset | uspto-grants-1991_02 |
| ORD ID | ord-7c3b26098a8e4d4691a41cf1c0e564b4 |
| Source note | uspto-grants-1991_02 |