Ene diiodo acetals : stereoselective synthesis of ene hydroxy acetals. Handy access to non conjugated dienals
作者:B Bonnet、G Ple、L Duhamel
DOI:10.1016/s0040-4020(98)83009-3
日期:1998.3
After halogen-metal exchange reaction followed by condensation with carbonyl compounds, ene diiodo acetal 1 allow the stereoselective synthesis of ene hydroxy acetals 2 with Z configuration, in a two step procedure. Moreover, after dehydration, the intermediate diene acetals 3–4, via an appropriated hydrolysis procedure, lead to pure non conjugated dienals 5.
卤素-金属交换反应,随后通过缩合与羰基化合物后,烯二碘乙缩醛1允许烯羟基缩醛的立体选择性合成2用Ž配置中,两个步骤的过程英寸 此外,脱水后,中间二烯缩醛3-4,经由一个拨水解过程,导致纯非共轭dienals 5。