Stereoselective additions to carboxylic acid dianions and β-lactone substituted ester enolates
作者:Johann Mulzer、Peter De Lasalle、Alexander Chucholowski、Ursula Blaschek、Gisela Brüntrup、Ibrahim Jibril、Gottfried Huttner
DOI:10.1016/0040-4020(84)80003-4
日期:1984.1
β-unsaturated β-hydroxy-carboxylic acids 2a/b. A diastereo- and enantioselective aldoltype addition of phenylacetic acid dianion to benzaldehyde has been achieved by employing optically active alkoxide amide bases. Finally, highly stereocontrolled additions to the novel β-lactone substituted ester enolates 22 are described.
据报道,利用抗构型的γ,β-不饱和β-羟基羧酸2a / b,对于外消旋的4-表-blastmycinone(6)和δ-multistriatine(13)进行了新的立体选择性合成。通过使用旋光性醇盐酰胺碱,已将苯乙酸二阴离子非对映体和对映体选择性的醛醇型加成到苯甲醛中。最后,描述了对新型β-内酯取代的酯烯酸酯22的高度立体控制的加成。