The free radical addition reactions of [1.1.1] propellane (1) are described in some detail and allowed the preparation of a wide variety of 1,3-disubstituted bicyclo [1.1.1.] pentanes. The reaction of 1 with free radicals was more rapid than that of bicyclo [1.1.0] butane (2), whereas bicyclo [2.1.0] pentane (3) was relatively inert
A continuous flow synthesis of [1.1.1]propellane and bicyclo[1.1.1]pentane derivatives
作者:Kian Donnelly、Marcus Baumann
DOI:10.1039/d0cc08124h
日期:——
generate [1.1.1]propellane on demand is presented rendering solutions of [1.1.1]propellane that can directly be derivatised into various bicyclo[1.1.1]pentane (BCP) species. This was realised in throughputs up to 8.5 mmol h−1 providing an attractive and straightforward access to gram quantities of selected BCP building blocks. Lastly, a continuous photochemical transformation of [1.1.1]propellane into valuable
提出了一种按需产生[1.1.1]丙炔的连续流动过程,提出了可直接衍生为各种双环[1.1.1]戊烷(BCP)物种的[1.1.1]丙炔溶液。在高达8.5 mmol h -1的通量中实现了这一目标,从而提供了对克量的所选BCP构建基块的吸引力和直接访问。最后,开发了一种持续的光化学转化方法,将[1.1.1]丙炔转化为带有混合的酯/酰氯部分的有价值的BCP。
Insertion of [1.1.1]propellane into aromatic disulfides
作者:Robin M Bär、Gregor Heinrich、Martin Nieger、Olaf Fuhr、Stefan Bräse
DOI:10.3762/bjoc.15.114
日期:——
and unsymmetrically substituted 1,3-bissulfanylbicyclo[1.1.1]pentanes from disulfides and [1.1.1]propellane. Bicyclo[1.1.1]pentanes (BCPs) recently gained interest as rigid linkers and as bioisosters of para-substituted benzene and alkyne moieties. The most promising precursor for BCPs is [1.1.1]propellane (1). The available methods to synthesize BCPs are quite limited and many groups contribute to the
作者:Kenneth B. Wiberg、Shennan T. Waddell、Keith Laidig
DOI:10.1016/s0040-4039(00)84310-5
日期:1986.1
[1.1.1]Propellane is more reactive towards free radicals than bicyclo[1.1.0]butane, and much more reactive than bicyclo[2.1.0]pentane. Therefore, the reactivity is not determined by strain energy relief or the HOMO energy. The addition of acetaldehyde is unique in that a 1:2 adduct is formed. A number of other additions are described, and provide convenient routes to 1,3-disubstituted bicyclo[1.1.1]pentanes
The widespread presence of bicyclo[1.1.1]pentane (BCP) and sulfur motifs in pharmaceutical compounds underscores the significance of synthesizing suitably functionalized BCP thioethers. In response, we have developed a metal-free and photocatalyst-free strategy that harnesses visible light-induced radical cascades. This approach culminates in the synthesis of essential thio-BCP derivatives, which serve