Synthesis of Some Bridgehead-Bridgehead-Disubstituted Bicyclo[1.1.1]pentanes
摘要:
The synthesis of a wide variety of 1,3-disubstituted bicyclo[1.1.1]pentanes is described, with particular emphasis on the generation of a series of S-X-substituted bicyclo[1.1.1]pentyl bromides required for solvolytic studies. Functional group manipulation at the bridgehead was readily accomplished in the majority of cases by radical processes in some instances, transformations were effected via carbanionic-type intermediates.
Disclosed herein are compounds of Formulae (I) and (II), methods of synthesizing compounds of Formulae (I) and (II), and methods of using compounds of Formulae (I) and (II) as an analgesic.
Unusual bridgehead reactivity: Formation of [1.1.1]Propellane by 1,3-dehydrobromination of 1-bromobicyclo[1.1.1]Pentane.
作者:Ernest W. Della、Dennis K. Taylor、John Tsanaktsidis
DOI:10.1016/s0040-4039(00)97847-x
日期:1990.1
The reaction between -butyllithium and 1-bromobicyclo[1.1.1]pentane is characterised by 1,3-dehydrobromination and gives [1.1.1]propellane . In the presence of -butyllithium, undergoes ring-opening and yields 3--butylbicyclo[l.l.1]pentyllithium .
Analgesic compounds for treatment of pain or fever that include a bicyclopentane moiety linked to an amine, combinations of the compounds with opioid analgesic drugs, and methods for treating pain or fever by administering a compound described herein.
Disclosed herein are compounds of Formulae (I) and (II), methods of synthesizing compounds of Formulae (I) and (II), and methods of using compounds of Formulae (I) and (II) as an analgesic.
Taming photocatalysis in flow: easy and speedy preparation of α-aminoamide derivatives
作者:Ricardo I. Rodríguez、Marina Sicignano、Montaña J. García、Rodrigo G. Enríquez、Silvia Cabrera、José Alemán
DOI:10.1039/d2gc02087d
日期:——
α-Aminoamides are reiterative molecular subunits in transcendental molecules, which bear attractive functionalities for (bio)synthetic purposes. Herein, their preparation by harnessing flow photocatalysis is described, which provides significant improvements over other catalytic methods in terms of efficiency while outperforming an analogous batch setup. A reaction time of five minutes, operational