| 摘要 |
1,160,310. Organo magnesium compounds. ESSO RESEARCH & ENG. CO. 3 April, 1967, No. 15208/67. Headings C2C and C2J. The invention comprises an adduct of magnesium with styrene, C 1 to C 7 alkyl, alkoxyl and aroxyl substituted styrenes and C 12 to C 40 condensed ring aromatic hydrocarbons, wherein magnesium is held in the said adduct in a ring structure. The ratio of styrenes to magnesium is 2:1 and the ratio of condensed ring aromatic hydrocarbons to magnesium is 1:1. The magnesium adds to the aromatic compound without displacing hydrogen. Examples of the organomagnesium compounds of this invention include styrene magnesium, anthracene magnesium, isoprene magnesium, chrysene magnesium, butadienestyrene magnesium, anthracenestyrene magnesium, isopreneanthracene magnesium,α-methylstyrene magnesium, pyrene magnesium. The organo-magnesium compounds are prepared by reacting magnesium metal with a compound of the above group or with styrene or a substituted styrene compound in admixture with a C 4 to C 40 conjugated diolefin, C 12 to C 40 condensed ring aromatic hydrocarbon, and mixtures of these, for a period sufficient to form an adduct of magnesium with the said compounds. The reaction is carried out in the presence of a high boiling mononuclear aromatic hydrocarbon, ethers, and paraffinic hydrocarbons, at a temperature of 20‹ to 170‹ C. for a period of 20 minutes to 48 hours, and the reaction is preferably initiated with a Grignard activator. The preferred medium is one comprising a C 4 to C 20 saturated cyclic ether such as tetrahydrofuran. Butadiene-styrene bis propanol as a benzene solution can be prepared by the following process. A mixture of one mole butadiene and one mole of styrene in tetrahydrofuran is added to one gram atom of magnesium turnings activated by ethylene dibromide in THF, and refluxed for 18 hours at 38‹ to 68‹ C. Two moles of propylene oxide in benzene is then added. Diphenyl adipic acid is prepared from styrenemagnesium by adding magnesium turnings to dibromoethane in THF, and then adding dropwise isoprene in THF. A solution of styrene in THF is added dropwise to the refluxing solution. After refluxing for 30 hours, the mixture is poured on to solid CO 2 suspended in THF and acidified, then extracted to yield a light yellow crystalline product. 2,5-Dimethyl-2,5-diphenyl- 1,6-hexane diol, and 1,4-diphenyl-1,4-butane diol are also prepared.
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