The present invention relates to metathesis syntheses for insect sex-attractant pheromones or their components, such as E-5-decenyl acetate, the major component of the Peach Twig Borer pheromone; (5R, 6S)-6-acetoxy-5-hexadecanolide, the mosquito oviposition attractant pheromone; E9, Z11-hexadecadienal, the pecan nut casebearer moth pheromone; 9-tetradecenyl formate, an analog of the Diamondback Moth (DBM) pheromone; 11-tetradecenyl acetate, the Omnivorous Leafroller (OLR) pheromone; E-4-tridecenyl acetate, the major component of the Tomato Pinworm (TPW) pheromone; E,E-8,10-dodecadienol, the Codling Moth (CM) pheromone. The syntheses preferably employ a Class I-IV metathesis catalyst, entail few reaction steps, use generally commercially available starting materials, and have relatively short process times. These syntheses produce good yields without the need for expensive or sophisticated equipment. The invention also provides an inexpensive route for producing omega-haloalkenols by cross-metathesizing alpha-omega-diacetoxy alkenes and alpha-omega-dihalides to yield omega-haloalkenols, which are easily converted into omega-haloalkanols under traditional hydrogenation methods.
本发明涉及对昆虫性诱素或其组分进行交换合成,如E-
5-癸烯醇
醋酸酯,桃枝蠕蛾性信息素的主要成分;(5R, 6S)-6-乙酰
氧基-5-
十六醇内
酯,蚊子产卵引诱素;E9, Z11-癸二
烯醛,山核桃果蛾性信息素;
9-十四烯酸甲
酯,菜青虫性信息素的类似物;1
1-十四烯醇
醋酸酯,杂食卷叶蛾性信息素;E-4-十
三烯醇
醋酸酯,番茄针孔螟性信息素的主要成分;E,E-8,10-十二二
烯醇,苹果蛾性信息素。这些合成通常采用I-IV类交换
催化剂,步骤较少,使用通常易得的起始物质,并具有相对较短的工艺时间。这些合成产量良好,无需昂贵或复杂的设备。该发明还提供了通过交叉交换α-Ω-
二乙酰基
烯烃和α-Ω-二卤代烃来产生Ω-卤代
烯醇的廉价途径,后者可以在传统的
氢化方法下轻松转化为Ω-卤代烷醇。