Toward a molecular-size tinkertoy construction set. Preparation of terminally functionalized [n]staffanes from [1.1.1]propellane
作者:Piotr Kaszynski、Andrienne C. Friedli、Josef Michl
DOI:10.1021/ja00028a029
日期:1992.1
of [n]staffanes (the oligomers of [1.1.1]propellanen=1-5) functionalized on one or both ends is described,and their properties are summarized. The substituents are -COOCH 3 ,-n-C 4 H 9 ,-C 6 H 5 ,-Br,-I and -SCOCH 3 , and their conversion to others,such as -COOH, -COCH 3 and -SH,is demonstrated. it is proposed that these rod-shaped molecules will be useful in the development of a molecular-size civil
描述了一种在一端或两端官能化的 [n]staffanes([1.1.1]propellane 的低聚物 n=1-5)的简便但低场合成,并总结了它们的性质。取代基为-COOCH 3 、-nC 4 H 9 、-C 6 H 5 、-Br、-I 和-SCOCH 3 ,并证明了它们向其他取代基如-COOH、-COCH 3 和-SH 的转化。建议这些棒状分子将有助于开发类似于儿童玩具建筑套装的分子大小的土木工程建筑套装
Development of Scalable Routes to 1-Bicyclo[1.1.1]pentylpyrazoles
作者:Cayetana Zarate、Michael Ardolino、Gregori J. Morriello、Kaitlyn M. Logan、William P. Kaplan、Luis Torres、Derun Li、Meng Chen、Hongming Li、Jing Su、Peter Fuller、Matthew L. Maddess、Zhiguo Jake Song
DOI:10.1021/acs.oprd.0c00446
日期:2021.3.19
The application of bicyclo[1.1.1]pentanes (BCPs) as phenyl bioisosteres has garnered significant attention, as these structural motifs can improve the physiochemical profiles of drug candidates. Despite the potential of using 1-bicyclo[1.1.1]pentylpyrazoles (BCPPs) as 1-phenylpyrazole bioisosteres, this area remains underexplored because of the relative lack of reliable synthetic methods for the preparation
Electrophilic Activation of [1.1.1]Propellane for the Synthesis of Nitrogen‐Substituted Bicyclo[1.1.1]pentanes
作者:Sarah Livesley、Alistair J. Sterling、Craig M. Robertson、William R. F. Goundry、James A. Morris、Fernanda Duarte、Christophe Aïssa
DOI:10.1002/anie.202111291
日期:2022.1.10
The third way: the umpolung of nucleophilic [1.1.1]propellane into an electrophilic halogen bond complex enables the synthesis of nitrogen-substituted bicyclo[1.1.1]pentanes (BCP) after attack of anilines and azoles. DFT calculations show that the halogen bond interaction helps avoiding the decomposition of the BCP cage. This approach opens a third avenue to access functionalised BCPs besides the better
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。