gamma-Butenylcyclopentadiene → HCID 178506707, compound
Reaction equation
C([Li:5])CCC.[CH2:6]([C:10]1[CH2:14][CH:13]=[CH:12][CH:11]=1)[CH2:7][CH:8]=[CH2:9]>C1COCC1>[CH2:6]([C:10]1([Li:5])[CH:14]=[CH:13][CH:12]=[CH:11]1)[CH2:7][CH:8]=[CH2:9]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
47.5 millimoles of butyllithium mixed with a C6 alkane are added slowly to 47.5 millimoles of the γ-butenylcyclopentadiene prepared in the preceding stage (b), in 50 ml of THF at 0° C. and are stirred for 1 hours. The γ-butenylcyclopentadienyllithium solution thus produced is added to 19 millimoles of hafnium tetrachloride in 50 ml of THF at 0° C. and is stirred for 65 hours. The volatile compounds are removed under vacuum and the residue is extracted with ether and filtered. The product is precipitated in the form of a white solid by slowly cooling the solution to −50° C. and recrystallizing from ether at −12° C.
Sources & evidence
- ORD record
- ord-fc6b44bf5422400894165b9293a12f3b
- Source dataset
- uspto-grants-2001_01
- Patent number
- US06174972B1
Reaction notes
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