30759-83-2Relevant articles and documents
Scalable Synthesis of β-Lactamase Inhibitor QPX7728 by Sequential Nickel-Catalyzed Boron Insertion into a Benzofuran Substrate and Enantioselective Cyclopropanation of the Resulting Vinylboronate
Boyer, Serge H.,De Vries, André H. M.,Dielemans, J. A. Hubertus,Gnahn, Matthias,Gonzalez-De-Castro, Angela,Hecker, Scott J.,Lefort, Laurent,Sch?rghuber, Julia,Steinhofer, Stefan,Zhu, Zuolin
supporting information, (2021/10/01)
We report the scalable, high-yielding, and highly selective synthesis of the β-lactamase inhibitor QPX7728 featuring two key synthetic steps: nickel-catalyzed boron insertion of benzofuran 1 followed by enantioselective cyclopropanation of the resulting cyclic vinylboronate 2. The identification of the key reagents (catalyst and chiral auxiliary) for both steps relied on the use of high-throughput experimentation. Further optimization allowed for the cost-effective and scalable production of QPX7728.
Synthesis and fluxional behavior of [bis(trialkylphosphine)nickelio]anthracene (alkyl = Et, Bu)
Stanger, Amnon,Vollhardt, K. Peter C.
, p. 317 - 320 (2008/10/08)
The title compounds were prepared from the respective (R3P)2NiCl2 complexes and magnesium-anthracene-(THF)3 (or anthracene in the presence of Mg or C8K). The assignment of the anthracene proton NMR si
