Aerobic oxidation of secondary benzylic alcohols and direct oxidative amidation of aryl aldehydes promoted by sodium hydride
作者:Xinbo Wang、David Zhigang Wang
DOI:10.1016/j.tet.2011.03.052
日期:2011.5
possible mechanistic implications of a simplest oxidant (NaH/air) uncovered on a broad range of useful transformations, including aerobic alcoholoxidations, allylicalcohol isomerizations and oxidations, cyclopropyl alcoholfragmentations, and direct aryl aldehyde oxidative amidations. These readily implementable transition-metal-free processes feature exceptional material accessibility, operational simplicity
Photocatalytic Vicinal Aminopyridylation of Methyl Ketones by a Double Umpolung Strategy
作者:Honggu Im、Wonjun Choi、Sungwoo Hong
DOI:10.1002/anie.202008435
日期:2020.9.28
umpolung strategy for the vicinal aminopyridylation of ketones was developed using pyridinium N−N ylides. The inversion of the polarity of the pyridinium N−N ylides by single‐electron oxidation successfully enables radical‐mediated 1,3‐dipolar cycloadditions with enolsilanes formed in situ from ketones, followed by homolytic cleavage of the N−N bond. Intriguingly, the nucleophilic amino and electrophilic
applicable to wide-range of cyclopropanes, and proceeds under neutral and mild conditions. A nitrogen-based directing group controls the reactivity of hydrosilanes as well as the regiochemistry of carbon-carboncleavage and hydrosilylation. This is a rare example of catalytic transformation of electronically unactivated cyclopropanes, which do not have conjugated substituents or directly substituted heteroatoms
Ruthenium Catalyzed Hydrohydroxyalkylation of Isoprene with Heteroaromatic Secondary Alcohols: Isolation and Reversible Formation of the Putative Metallacycle Intermediate
作者:Boyoung Y. Park、T. Patrick Montgomery、Victoria J. Garza、Michael J. Krische
DOI:10.1021/ja4087193
日期:2013.11.6
Heteroaromaticsecondaryalcohols react with isoprene to form products of hydrohydroxyalkylation in the presence of ruthenium(0) catalysts generated from Ru3(CO)12 and tricyclohexylphosphine, enabling direct conversion of secondary to tertiary alcohols in the absence of premetalated reagents or stoichiometric byproducts. The putative oxaruthenacycle intermediate has been isolated and characterized
PYRIDONE COMPOUND, AND AGRICULTURAL AND HORTICULTURAL FUNGICIDE HAVING THIS AS ACTIVE COMPONENT
申请人:Mitsui Chemicals Agro, Inc.
公开号:EP3611164A1
公开(公告)日:2020-02-19
Novel compounds controlling plant diseases are provided. Pyridone compounds of the invention are novel and can control plant diseases. The pyridone compounds of the invention encompass compounds of formula (1) and salts thereof.