83249-09-6Relevant articles and documents
Redox-Active Esters in Fe-Catalyzed C-C Coupling
Toriyama, Fumihiko,Cornella, Josep,Wimmer, Laurin,Chen, Tie-Gen,Dixon, Darryl D.,Creech, Gardner,Baran, Phil S.
, p. 11132 - 11135 (2016)
Cross-couplings of alkyl halides and organometallic species based on single electron transfer using Ni and Fe catalyst systems have been studied extensively, and separately, for decades. Here we demonstrate the first couplings of redox-active esters (both isolated and derived in situ from carboxylic acids) with organozinc and organomagnesium species using an Fe-based catalyst system originally developed for alkyl halides. This work is placed in context by showing a direct comparison with a Ni catalyst for >40 examples spanning a range of primary, secondary, and tertiary substrates. This new C-C coupling is scalable and sustainable, and it exhibits a number of clear advantages in several cases over its Ni-based counterpart.
3-Aminobicyclo[1.1.1]pentane-1-carboxylic Acid Derivatives: Synthesis and Incorporation into Peptides
Paetzel, Michael,Sanktjohanser, Maximilian,Doss, Alexander,Henklein, Peter,Szeimies, Guenter
, p. 493 - 498 (2007/10/03)
We have developed an efficient synthesis of derivatives of 3-aminobicyclo[1.1.1]pentane-1-carboxylic acid (7, 8, 9, and 10) starting from [1.1.1]propellane (3). These rigid analogues of γ-aminobutyric acid have been incorporated into linear and cyclic peptides using solution chemistry and solid-phase techniques. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.
Synthesis of Some Bridgehead-Bridgehead-Disubstituted Bicyclopentanes
Della, Ernest W.,Taylor, Dennis K.
, p. 2986 - 2996 (2007/10/02)
The synthesis of a wide variety of 1,3-disubstituted bicyclopentanes is described, with particular emphasis on the generation of a series of 3-X-substituted bicyclopentyl 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.
