<i>i</i>-Pr<sub>2</sub>NMgCl·LiCl Enables the Synthesis of Ketones by Direct Addition of Grignard Reagents to Carboxylate Anions
作者:Kilian Colas、A. Catarina V. D. dos Santos、Abraham Mendoza
DOI:10.1021/acs.orglett.9b02899
日期:2019.10.4
preparation of ketones from carboxylate anions is greatly limited by the required use of organolithiumreagents or activated acyl sources that need to be independently prepared. Herein, a specific magnesium amide additive is used to activate and control the addition of more tolerant Grignardreagents to carboxylate anions. This strategy enables the modular synthesis of ketones from CO2 and the preparation
Experimental and density functional theory studies on hydroxymethylation of phenylboronic acids with paraformaldehyde over a RhPPh
<sub>3</sub>
catalyst
作者:Kuan Wang、Jie Lan、Zhen‐Hong He、Zhe Cao、Weitao Wang、Yang Yang、Zhao‐Tie Liu
DOI:10.1002/aoc.6104
日期:2021.2
The synthesis of benzyl alcohols (BAs) is highly vital for their wide applications in organic synthesis and pharmaceuticals. Herein, BAs was efficientlysynthesized via hydroxymethylation of phenylboronic acids (PBAs) and paraformaldehyde over a simple RhPPh3 catalyst combined with an inorganic base (NaOH). A variety of BAs with the groups of CH3−, CH3O−, Cl−, Br−, and so on were obtained with moderate
Pyridine-catalyzed desulfonative borylation of benzyl sulfones
作者:Yuuki Maekawa、Zachary T. Ariki、Masakazu Nambo、Cathleen M. Crudden
DOI:10.1039/c9ob01099h
日期:——
pyridine-catalyzed desulfonative borylation of benzyl sulfones with bis(pinacolato)diboron (B2pin2). A variety of benzhydryl- and benzyl boronic esters could be synthesized from readily prepared sulfone derivatives. The borylation of cyclic sulfones accompanied by ringopening also proceeded to afford the corresponding sulfonate, which could be converted into functionalized sulfones and sulfonamides.
Synthesis and Quantitative Structure-Activity Relationships of Antibacterial 1-(Substituted Benzhydryl)-4-(5-nitro-2-furfurylideneamino)piperazines
作者:D.K. Yung、M.L. Gilroy、D.E. Mahony
DOI:10.1002/jps.2600670707
日期:1978.7
1-Benzhydryl -4- (5-nitro-2-furfurylideneamino) piperazine and 11 substituted analogs were prepared and examined for in vitro antimicrobial activity. The compounds were active against Bacillus cereus 7, Bacillus megaterium 122, Bacillus subtilis 104, Clostridium perfringens 13, and the tetracycline-resistant Clostridium perfringens 37. Regression analyses on the antibacterial activity data based on