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EXAMPLE 33A 4'-propyl(1,1'-biphenyl)-4-carboxylic acid The desired product was prepared by substituting 1-bromo-4-propylbenzene for 2-bromo-5-chlorothiophene in Example 29A. MS (APCI(-)) m/e 239 (M-H)-.
Example 33A 4'-propyl(1,1'-biphenyl)-4-carboxylic acid The desired product was prepared by substituting 1-bromo-4-propylbenzene for 2-bromo-5-chlorothiophene in Example 29A. MS (APCI(-)) m/e 239 (M-H)-.
4-(1,4-dioxaspiro[4.5]dec-8-yl)-1-(4-propylphenyl)cyclohexanol[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
With magnesium; In tetrahydrofuran; for 1h;Reflux;
160g (0.67mol) 4- (1,4- dioxa-spiro [4.5] dec-8-yl) cyclohexanone dissolved in 600ml THF was added to Grignard reagent solution (400ml of THF) generated from a solution of 147g (0.74mol) of p-bromo-propylbenzene and 18.0g (0.74mol) of magnesium turnings. When the addition was complete, the mixture was heated under reflux for 1h, and whererin a saturated ammonium chloride solution was added. The mixture was acidified with dilute hydrochloric acid and extracted several times with MTBE. The combined organic phases were washed with water, and the solution was dried over sodium sulfate. Without further purification, the crude product was obtained after removal of these solvents`.