Tetrahydrofuran → p-methylcarbonylstyrene
Reaction equation
C([Li])(CC)C.C(O[C:11]1[CH:18]=[CH:17][C:14]([CH:15]=[CH2:16])=[CH:13][CH:12]=1)(C)(C)C.[O:19]1CC[CH2:21][CH2:20]1>>[CH3:21][C:20]([C:11]1[CH:12]=[CH:13][C:14]([CH:15]=[CH2:16])=[CH:17][CH:18]=1)=[O:19]Participants
4
Procedure
A 1-liter flask was charged with 500 ml of tetrahydrofuran as a solvent and 0.01 mol of sec-butyl lithium as an initiator. To the solution at −78° C. was added 30 g of p-tert-butoxystyrene. With stirring, polymerization reaction was effected for 30 minutes. The reaction solution turned red. For producing a branched polymer, 0.005 mol of p-methylcarbonylstyrene was added to the reaction solution whereupon reaction was effected for 5 minutes. Further 15 g of p-tert-butoxystyrene was added. With stirring, polymerization reaction was effected for 30 minutes. Polymerization was stopped by adding 0.1 mol of methanol to the reaction solution.
Workup
- custompolymerization reaction
Sources & evidence
- ORD record
- ord-c395390d019f4a399257ec06c13a5fea
- Source dataset
- uspto-grants-2002_07
- Patent number
- US06414101B1
Reaction notes
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