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(Z)-11-hydroxy-7,11-dimethyldodec-4-enoic acid[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
99%
General procedure: Under an atmosphere of argon, the carboxyalkyl triphenyl phosphonium bromide (2.0 equiv) is dissolved in anhydrous THF (0.6 M) The suspension is cooled to 0 C and KOt-Bu (powder or 1 M in THF; 4.0 equiv) is added dropwise. After 30 min of stirring at room temperature, a solution of the aldehyde (1.0 equiv) in anhydrous THF (2 M) is added dropwise at 0 C. The reaction is stirred at room temperature and after the aldehyde is consumed, the mixture is quenched with 1 M aq. HCl solution (20 mL), extracted with Et2O (3 30 mL) and washed with H2O (2 60 mL). The combined organic layers are washed with brine, dried over anhydrous Na2SO4, filtered and the solvent is removed under reduced pressure. The residue is purified on silica gel to yield the title compound.