Phosphino Hydrazones as Suitable Ligands in the Asymmetric Suzuki–Miyaura Cross-Coupling
作者:Abel Ros、Beatriz Estepa、Antonio Bermejo、Eleuterio Álvarez、Rosario Fernández、José M. Lassaletta
DOI:10.1021/jo300548z
日期:2012.5.18
Phosphino hydrazones derived from C2-symmetric hydrazines exhibit excellent catalytic activity and provide good enantioselectivities in the asymmetric Suzuki–Miyaura cross-coupling to axially chiralbiaryls, in particular for the most challenging reactions of monocyclic, functionalized aryl bromides and triflates. X-ray analysis of preformed [Pd(P/N)Cl2] precatalysts [(P/N) = phosphino hydrazone] revealed
57.—Benzanthrones. Part IV. The synthesis of 2- and 4-methyl-1-phenylnaphthalene-2′-carboxylic acids. The conversion of benzfluorenones into benzanthrones
作者:Fawzy Ghali Baddar
DOI:10.1039/jr9410000310
日期:——
Further Observations on the Use of Hydrogen Fluoride in Acylations and Cyclizations
作者:Louis F. Fieser、E. B. Hershberg
DOI:10.1021/ja01858a010
日期:1940.1
Amide-Directed C−H Sodiation by a Sodium Hydride/Iodide Composite
作者:Yinhua Huang、Guo Hao Chan、Shunsuke Chiba
DOI:10.1002/anie.201702512
日期:2017.6.1
A new protocol for amide-directed ortho and lateral C-H sodiation is enabled by sodiumhydride (NaH) in the presence of either sodium iodide (NaI) or lithium iodide (LiI). The transient organosodium intermediates could be transformed into functionalized aromatic compounds.