Poly-substituted 3-phenyl phenol derivatives and preparation method thereof
A phenylphenol and multi-substituted technology, applied in the field of multi-substituted 3-phenylphenol derivatives and their preparation, can solve the problems of harsh synthesis conditions, cumbersome steps, etc., and achieves short reaction time, complex and diverse structures, and reaction temperature. less demanding effects
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[0035] A kind of multi-substituted 3-phenylphenol derivatives, its structural formula is:
[0036]
[0037] A kind of preparation method of substituted 3-phenylphenol derivatives, described preparation method comprises the following steps:
[0038] (1) With 830mmol sodium hydride as a catalyst, 200mmol dimethyl malonate and 440mmol propargyl bromide were added to 210mL anhydrous acetonitrile in an ice-water bath, stirred and reacted for 8 hours, the product was washed with water, extracted with ethyl acetate, and Press and spin dry to obtain a brownish-yellow solid product, namely compound 1;
[0039] (2) Mix 80mmol compound 1 with 200mmol phenylethynyl bromide in Pd(PPh 3 ) 2 Cl 2 / CuI(2.56mmol / 0.85mmol) anhydrous and oxygen-free catalytic system, the molar ratio of Pd(PPh 3 ) 2 Cl 2 : CuI=3:1, with 336mmol triethylamine as base, 150mL of anhydrous acetonitrile as solvent, stirred and reacted at room temperature for 12 hours, the product was washed with water, extrac...
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