A Convenient Road to 1-Chloropentacycloundecanes - A Joint Experimental and Computational Investigation
作者:Dmitry I. Sharapa、Alexander V. Gayday、Alena G. Mitlenko、Igor A. Levandovskiy、Tatyana E. Shubina
DOI:10.1002/ejoc.201001731
日期:2011.5
undergo an acid-catalyzed rearrangement to form 1-chloro-D 3 -trishomocubane and was obtained by chlorosulfation of Cook-son's diketone. A possible mechanism of the reaction involving the formation of C s - and D 3 -trishomocubane nonclassical cations was proposed on the basis of a mechanistic [B3PW91/ 6-31G(d,p) and MP2/cc-pVDZ] study.
描述了获得 1-氯-C s -trishomocubane 和 1-氯-D 3 -trishomocubane 的有效合成策略。1-Chloro-C s -trishomocubane 是通过区域选择性 Diels-Alder 反应合成的,B3PW91/6-31G(d,p) 计算提供了对反应机理的合理解释。令人惊讶的是,1-氯-C s -trishomocubane 没有经过酸催化重排形成1-氯-D 3 -trishomocubane 并且是通过库克森二酮的氯硫酸化获得的。基于 [B3PW91/6-31G(d,p) 和 MP2/cc-pVDZ] 的机理研究,提出了涉及形成 C s - 和 D 3 -trishomocubane 非经典阳离子的反应的可能机制。
Stereoselective preparation of mono- and bis-derivatives of pentacyclo[6.3.0.02,6.03,10.05,9] undecane (D 3-trishomocubane)
-stereochemistry was assigned through the X-ray crystal structure analysis. This key structure was used for the stereoselectivesynthesis of the D 3-trishomocubane derivatives as well as for the preparation of potential drugs bearing hydroxy- and amino-functional groups. A new multigram preparative synthesis of D 3-trishomocubane was developed.
在氯仿中用氯磺酸将易得的库克森二酮重排,然后进行酸性水解,得到6-氯-7-羟基-二氯五环[6.3.0.0 2,6 .0 3,10 .0 5,9 ]十一烷-4-酮,其 顺式 -立体化学通过X射线晶体结构分析被分配。该关键结构用于 D 3-三嘧菌丁烯衍生物的立体选择性合成, 以及用于制备带有羟基和氨基官能团的潜在药物。开发了 D 3 -trishomocubane的新型多克制备合成 。
Preparative synthesis of pentacyclo[6.3.0.02,6.03,10.05,9]undecan-4-one (D 3-trishomocubanone)
作者:A. M. Mishura、A. S. Sklyarova、T. V. Shamota、V. N. Rodionov、A. A. Fokin