The invention relates to an improved process for isomerizing polyunsaturated non-aromatic compounds including acyclic conjugated polyenes and alicyclic conjugated polyenes. In particular it relates to an improved and safe process for forming a 11-E retinoid compounds in high yield by expending as few energy as possible and with avoiding at most possible side products or product mixtures. This is achieved by feeding at least one of retinoid compounds of formula 2 to 5, or at least one of retinoid compounds of formula 2 to 5 and retinoid compound of formula 1, an organic solvent and a photosensitizer into a reaction device and irradiating the thus obtained reaction mixture with visible monochromatic light, at least 90 % of the power of said monochromatic light and at most 100 % of said power being emitted in the range from 460 nm to 580 nm.
本发明涉及一种改进的过程,用于异构化多不饱和非芳香化合物,包括无环共轭多烯和脂环共轭多烯。特别是,它涉及一种改进和安全的过程,通过尽可能少地消耗能量并尽可能避免副产物或产物混合物的形成,以高产率形成11-E视黄
醇类化合物。这通过将公式2至5的至少一种
视黄醇化合物或公式2至5的至少一种
视黄醇化合物和公式1的
视黄醇化合物、有机溶剂和光敏剂进入反应装置,并用可见单色光照射所得到的反应混合物来实现,所述单色光的至少90%的功率和最多100%的功率在460nm至580nm范围内发射。