Organotin homoenolate equivalents - access to β-acyl-and β-aryl-propionaldehydes through heterosubstituted allyltins and vinyltins
作者:Jean-Baptiste Verlhac、Michel Pereyre、Jean-Paul Quintard
DOI:10.1016/s0040-4020(01)96010-7
日期:1990.1
as an equivalent of the homoenolate anion CH3-CHCH2CHO in reaction with acyl chlorides, the non-substituted α-ethoxyallyltributyltin could not be employed in this way. γ-Methoxyvinyltins, easily prepared by hydrostannation of propargylic ethers, are successfully employed as synthetic equivalents of the homoenolate anions-CH2CH2CHO and -CH2CH2COCH3 in reactions with acyl chlorides. A silylated γ-methoxyvinyltin
虽然,α-ethoxycrotyltributyltin可以用作等效的homoenolate阴离子CH的3 - CHCH 2与酰氯在CHO反应时,非取代的α-ethoxyallyltributyltin无法以这种方式使用。γ-Methoxyvinyltins,容易地通过炔醚hydrostannation制备,成功地用作homoenolate阴离子的合成等价- CH 2 CH 2 CHO和- CH 2 CH 2 COCH 3与酰氯反应。甲硅烷基化γ-methoxyvinyltin,这既是一个乙烯基锡和烯丙基硅烷,与酰氯和芳基溴化物作为有力的当量homoenolate阴离子发生反应- CH 2 CH 2 CHO和容许大范围的其它反应性官能团。