The present disclosure relates to a preparation method of an acrylic ester compound. The preparation method of an acrylic ester compound according to the present disclosure enables the use of acrylic anhydride as a reactant instead of acryloyl chloride, which is difficult to handle, by using an alkane diamine as a catalyst. Therefore, not only can the reaction be carried out at a low temperature, but also conversion to an acrylic ester compound and a yield of the acrylic ester compound can be improved.
The 6, 6, 7-membered tricyclic ether ring system (ABC-ring) of hemibrevetoxinB was stereoselectively synthesized. The curcial steps in the present synthesis involve the ring expansion of tetrahydropyran to oxepane, 6-endo cyclization of epoxy alcohol, and insertion of a C-4 unit to the A-ring.
hemibrevetoxin B 的 6, 6, 7 元三环醚环系统 (ABC-ring) 是立体选择性合成的。本合成中的关键步骤包括四氢吡喃扩环为氧杂环庚烷、环氧醇的 6-内环化以及将 C-4 单元插入 A 环。
A new selenium-assisted cyclization - A biogenetic-type synthesis of safranal.
Cyclization of the olefinic β-hydroxy selenide (5) with various catalysts was carried out to give the cyclic compound (9) which was converted to safranal (19) via the olefinic alcohol (14), the diolefinic alcohol (16), and the aldehyde (17).
The present disclosure relates to a preparation method of an acrylic ester compound. The preparation method of an acrylic ester compound according to the present disclosure enables the use of acrylic anhydride as a reactant instead of acryloyl chloride, which is difficult to handle, by using an alkane diamine as a catalyst. Therefore, not only can the reaction be carried out at a low temperature, but also conversion to an acrylic ester compound and a yield of the acrylic ester compound can be improved.
The present disclosure relates to a preparation method of an acrylic ester compound. The preparation method of an acrylic ester compound according to the present disclosure enables the use of acrylic anhydride as a reactant instead of acryloyl chloride, which is difficult to handle, by using an alkane diamine as a catalyst. Therefore, not only can the reaction be carried out at a low temperature, but also conversion to an acrylic ester compound and a yield of the acrylic ester compound can be improved.