A process for the production of high molecular weight unsaturated ketones by alkylation of low molecular weight .alpha.,.beta.-unsaturated ketones with an allyl alcohol at elevated temperature in the presence of an acid catalyst. The products are intermediates for the production of various natural substances and perfumes such as the damascenones, damascones or natural dyes such as zeaxanthin, rhodoxanthin or xanthophyll.
一种生产高分子量不饱和酮的方法,通过在酸催化剂存在下,将低分子量α,β-不饱和酮与
烯丙醇在高温下烷基化。所得产物是生产各种天然物质和
香料的中间体,例如大马士革酮,
大马士酮或天然
染料,如
玉米黄素,
紫黄素或黄质。