会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明公开
    • PROCESSES FOR PRODUCING (4E)-5-CHLORO-2-ISOPROPYL-4-PENTENOIC ESTER AND OPTICALLY ACTIVE ISOMER THEREOF
    • VERFAHREN ZUR HERSTELLUNG VON(4E)-5-氯-2-异丙基-4-戊烯酸酯和OPTISCHAKTIVEM ISOMER DAVON
    • EP1571138A4
    • 2005-12-07
    • EP03777366
    • 2003-12-09
    • ASAHI GLASS CO LTD
    • MORI NOBUAKIMATSUMURA YASUSHIMORIZAWA YOSHITOMIKAMINUMA TOSHIHIKOAOKI YUUICHI
    • C07C67/32C07C67/343C07C67/48C07B53/00C07B57/00C07C69/65
    • C07C67/343C07B2200/07C07B2200/09C07C67/32C07C67/48C07C69/65
    • Processes for producing a (4E)-5-chloro-2-isopropyl-4-pentenoic ester and an optically active isomer thereof which are useful as intermediates for medicines and agricultural chemicals. One of the processes, which is for producing a (4E)-5-chloro-2-isopropyl-4-pentenoic ester represented by the following formula (4), is characterized by reacting a compound represented by the following formula (2) with a base (II) in the presence of an aprotic solvent (II) and subsequently with (1E)-1,3-dichloro-1-propene to obtain a compound represented by the following formula (3) and then eliminating the alkoxycarbonyl group from one of the ester groups of the compound represented by the following formula (3). The other process, which is for producing an (S)-(4E)-5-chloro-2-isopropyl-4-pentenoic ester represented by the following formula (5), is characterized by optically resolving the (4E)-5-chloro-2-isopropyl-4-pentenoic ester represented by the formula (4), which is obtained by that production process. (In the formulae, R represents lower alkyl or aralkyl.)
    • 生产用作药物和农业化学品中间体的(4E)-5-氯-2-异丙基-4-戊烯酸酯及其旋光异构体的方法。 用于制备由下式(4)表示的(4E)-5-氯-2-异丙基-4-戊烯酸酯的方法之一的特征在于使由下式(2)表示的化合物与 在非质子传递溶剂(II)存在下,然后用(1E)-1,3-二氯-1-丙烯处理碱(II),得到下式(3)代表的化合物,然后从其中除去烷氧基羰基 由下式(3)表示的化合物的酯基之一。 另一种用于制备由下式(5)表示的(S) - (4E)-5-氯-2-异丙基-4-戊烯酸酯的方法的特征在于通过光学拆分(4E)-5- (4)所示的3-氯-2-异丙基-4-戊烯酸酯,由该制造方法得到。 (式中,R表示低级烷基或芳烷基。)