[EN] NEW SUBSTITUTED BIPHENYL ANALOGUES AS DUAL INHIBITORS OF AROMATASE AND SULFATASE [FR] NOUVEAUX ANALOGUES DE BIPHÉNYLE COMME INHIBITEURS DOUBLES DE L'AROMATASE ET DE LA SULFATASE
Arylation, Vinylation, and Alkynylation of Electron-Deficient (Hetero)arenes Using Iodonium Salts
作者:Chuan Liu、Qiu Wang
DOI:10.1021/acs.orglett.6b02550
日期:2016.10.7
Arylation, vinylation, and alkynylation of electron-deficient arenes and heteroarenes have been achieved by chemoselective C–H zincation followed by copper-catalyzed coupling reactions using iodoniumsalts. This approach offers a direct and general access to a wide scope of (hetero)biaryls as well as alkenylated and alkynylated heteroarenes under mild conditions. It is particularly useful and valuable
Practical One-Pot Preparation of Magnesium Di(hetero)aryl- and Magnesium Dialkenylboronates for Suzuki-Miyaura Cross-Coupling Reactions
作者:Benjamin A. Haag、Christoph Sämann、Anukul Jana、Paul Knochel
DOI:10.1002/anie.201103022
日期:2011.8.1
Mg for B: An atom‐economical one‐potsynthesis by direct magnesium insertion in the presence of B(OBu)3 and LiCl allows a broad range of functionalized (hetero)aryl and alkenyl bromides to be converted into magnesium diorganoboronates 2, which undergo Suzuki–Miyauracross‐couplingreactions with various aryl (pseudo)halides (see scheme). Both aryl groups of 2 are transferred and furnish the products
Highly Selective Metalations of Pyridines and Related Heterocycles Using New Frustrated Lewis Pairs or tmp-Zinc and tmp-Magnesium Bases with BF3⋅OEt2
作者:Milica Jaric、Benjamin A. Haag、Andreas Unsinn、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1002/anie.201002031
日期:——
Efficient and selective: FrustratedLewispairs based on BF3⋅OEt2 and LiCl‐complexed tmpMg or tmpZn amides (tmp=2,2,6,6‐tetramethylpiperidyl) allow the efficient and regioselective metalation of various functionalized N heterocycles (see scheme for examples). Moreover, such metalations carried out in the presence or absence of BF3⋅OEt2 enable a complete switch of regioselectivity, thus allowing complementary