Palladium(0)-catalyzed intramolecular cross coupling of bromodialkenylamines, bromoalkenylalkenamides and bromodialkenyl ethers followed by in situ [4+2] cycloaddition with suitable dienophiles gave tetrahydroisoindolines (31−73% yield), tetrahydroisoindolin-1-ones (43−51%) and hexahydrobenzo[c]furans (35−55%), and hexahydro-1H-[2]pyrindines (66−75%), respectively, each in one-pot operations.
Rare Example of Nucleophilic Substitution at Vinylic Carbon with Inversion: Mechanism of Methyleneaziridine Formation by Sodium Amide Induced Ring Closure Revisited
作者:Jason J. Shiers、Michael Shipman、Jerome F. Hayes、Alexandra M. Z. Slawin
DOI:10.1021/ja0482684
日期:2004.6.1
(Z)-2-bromobut-2-enylamines by the pendant nitrogen atom leads to 2-ethyleneaziridines by way of stereochemical inversion at the vinylic carbon atom. The stereochemistry of the products is unambiguously established by X-ray crystallography performed on two derivatives. These cyclizations represent some of the first examples of substitution with inversion in unactivated vinylic substrates. In conjunction
(E)- 和 (Z)-2-bromobut-2-enylamines 的 C-Br 键被侧氮原子的分子内亲核取代通过在乙烯基碳原子上的立体化学反转产生 2-亚乙基氮丙啶。产物的立体化学是通过对两种衍生物进行的 X 射线晶体学明确确定的。这些环化代表了在未活化的乙烯基底物中进行反转取代的一些第一个例子。结合额外的氘标记实验,该反应的公认机制被证明是有缺陷的。
The Reaction of Epihalohydrins with Sodium Acetylide
作者:CLAUDE F. HISKEY、H. L. SLATES、N. L. WENDLER
DOI:10.1021/jo01110a014
日期:1956.4
A new synthesis of indoles
作者:John A. Murphy、Karen A. Scott、Rhona S. Sinclair、Norman Lewis
DOI:10.1016/s0040-4039(97)01695-x
日期:1997.10
Aryl radical cyclisation onto appropriate vinyl bromides leads to a new route to indoles.