作者:Carmen Nájera、Miguel Yus
DOI:10.1016/s0040-4039(00)96952-1
日期:——
()-4-Lithio-4-tosylbutenone dimethyl ketal is regio and stereoselectively prepared by direct lithiation of the corresponding precursor with methyl-lithium at -20°C; the reaction of this β-acylvinyl anion equivalent with different electrophilic reagents (H2O, D2O, Me3SiCl, Me2S2, Mel, CH2=CHCH2Br, BuiCHO, PhCHO, PhCOCl, Ac2O) affords the corresponding functionalized compounds.
()-4-硫代-4-甲苯磺酰基丁烯酮二甲基缩酮是通过在-20℃下用甲基锂直接锂化相应的前体而立体选择性地制备的;这种β-acylvinyl阴离子等价物具有不同的亲电试剂(H的反应2 O,d 2 O,我3的SiCl中,Me 2小号2,MEL,CH 2 = CHCH 2 BR,卜我CHO,苯甲醛,PhCOCl,AC 2 O)提供相应的官能化化合物。