Direct synthesis of 2,3,5-trichloro-4,4-dimethoxy-and 2,5-dichloro-3,4,4-trimethoxycyclopent-2-en-1-ones from hexachlorocyclopentadiene and some aspects of their reactivity
摘要:
2,3,5-Trichloro-4,4-dimethoxy-and 2,5-dichloro-3,4,4-trimethoxycyclopent-2-en-1-ones were synthesized directly by treatment of hexachlorocyclopentadiene with methanol in the presence of potassium hydroxide at room temperature or on heating and subsequent acidification of the reaction mixture. Reactions of 2,3,5-trichloro-4,4-dimethoxycyclopent-2-en-1-one with some reducing agents and nucleophiles were studied.
Stereoselective Preparation of the Tricyclic Hexasubstituted Spirocyclopropane Core of Cyclohelminthol X
作者:Kazuki Hashimoto、Hayato Maeda、Masaru Hashimoto
DOI:10.1021/acs.orglett.4c00203
日期:——
This study focused on synthesizing the tricyclic hexasubstituted spirocyclopropane-core framework 2 of cyclohelminthol X (1), an antifungal cytotoxin isolated from Helminthosporium velutinum yone96 in a stereoselective manner. The synthesis features an SN2-type cyclopropanation of the quaternary chloride 23 generated via a retro-Michael-type ring-opening reaction of an 8-azatricyclo[4.3.0.12,5]deca-3
本研究的重点是合成环蠕虫醇 X ( 1 ) 的三环六取代螺环丙烷核心框架2 ,环蠕虫醇 X 是一种以立体选择性方式从Helminthosporium velutinum yone96 中分离出来的抗真菌细胞毒素。该合成的特点是通过 8-氮杂三环[4.3.0.1 2,5 ]deca-3,7,9-trione 衍生物的逆迈克尔型开环反应生成氯化季盐23的 S N 2 型环丙烷化反应22 .成功的合成证实了1的结构,解决了由于缺乏X射线晶体学分析而产生的歧义。制备的模型表现出有效的细胞毒性。
Synthesis of (�) -2,3,5-trichloro-4, 4-dimetoxycyclopent-2-en-1-one
作者:O. M. Kuznetsov、C. A. Torosyan、N. S. Vostrikov、M. S. Miftakhov
DOI:10.1007/bf01431137
日期:1996.11
At 20 degrees C, (+/-)-1,3,4-trichloro-2-isobornyloxy-5,5-dimethoxycyclopentadiene slowly decomposes to give (+/-)-2,3,5-trichloro-4,4-dimethoxycyclopent-2-en-1-one.
Tolstikov, G. A.; Ismailov, S. A.; Vel'der, Ya. L., Journal of Organic Chemistry USSR (English Translation), 1990, vol. <l> 26, # 3.2, p. 576 - 577
作者:Tolstikov, G. A.、Ismailov, S. A.、Vel'der, Ya. L.、Miftakhov, M. S.
DOI:——
日期:——
Zefirov, N. S.; Kirpichenok, M. A.; Shestakova, T. G., Journal of Organic Chemistry USSR (English Translation), 1983, vol. 19, p. 469 - 474
作者:Zefirov, N. S.、Kirpichenok, M. A.、Shestakova, T. G.
DOI:——
日期:——
Efficient one-pot synthesis of chlorinated cyclopentenones from hexachlorocyclopentadiene
作者:Nadezhda A. Ivanova、Kseniya S. Kislitsina、Mansur S. Miftakhov
DOI:10.1016/j.mencom.2007.09.021
日期:2007.9
The interaction of hexachlorocyclopentadiene (CPCl6) with KOH in MeOH followed by acidic treatment of the reaction mass results in synthetically valuable 2,3,5-trichloro-4,4-dimethoxy- or 2,5 -dichloro-3,4,4-trimethoxycyclopent-2-en-1-ones.