Réactifs de Polyvinylogation : accès aisé et rapide à des Polyénals variés.
摘要:
This work describes the synthesis and the reactivity of three reagents of polyvinylogation 1-3 By condensation with several aldehydes and ketones, these reagents allow the introduction of three or four doubles bonds, leading to polyenals 5-6 in one or two steps with good yields, A thorough study by high field NMR spectroscopy has been realised ; these polyenals show an all trans configuration.
Functionalized vinylic organolithium compounds, synthetic equivalent of ω-lithio sorbaldehyde
作者:L. Duhamel、G. Ple、Y. Ramondenc
DOI:10.1016/s0040-4039(00)70701-5
日期:1989.1
Functional vinylic anions and react with aldehydes and ketones leading after hydrolysis to polyenic aldehydes . They have been used for the synthesis of navenone B .