An efficient manganese oxide octahedral molecular sieves OMS-2-catalyzed chemoselective synthesis of 1,4-enediones and 1,4-diketones from 1,3-dicarbonyls and alpha-iodoacetophenones is described. The present catalytic system can be applied in one-pot, three-component reactions of methyl ketones, 1,3-dicarbonyls and iodine. Moreover, OMS-2 can be reused at least 5 times without loss of activity. (C) 2015 Elsevier B.V. All rights reserved.
N-Phenethyl and N-naphthylmethyl isatins and analogues as in vitro cytotoxic agents
作者:Lidia Matesic、Julie M. Locke、John B. Bremner、Stephen G. Pyne、Danielle Skropeta、Marie Ranson、Kara L. Vine
DOI:10.1016/j.bmc.2007.12.026
日期:2008.3.15
A range of N-phenethyl, N-phenacyl, and N-(1- and 2-naphthylmethyl) derivatives of 5,7-dibromoisatin 2 were prepared by N-alkylation reactions. Their activity against human monocyte-like histiocytic lymphoma (U937), leukemia (Jurkat), and breast carcinoma (MDA-MB-231) cell lines was assessed. The results allowed further development of structure-activity relationships. The compound 5,7-dibromo-N-(1-naphthylmethyl)-1H-indole-2,3-dione 5a was the most potent against U937 cells with an IC50 value of 0.19 mu M. (C) 2007 Elsevier Ltd. All rights reserved.
[EN] QUATERNARY AMMONIUM FLUORIDE SALTS FOR FLUORINATION REACTIONS<br/>[FR] SELS DE FLUORURE D'AMMONIUM QUATERNAIRE POUR RÉACTIONS DE FLUORATION
申请人:COUNCIL SCIENT IND RES
公开号:WO2022038631A1
公开(公告)日:2022-02-24
The present invention relates to a quaternary ammonium fluoride salt selected from formula (Ia) and formula (Ib), process for the preparation thereof and their use in the SN2 and SNAr fluorination reaction of sulfonates and halides.(1a), (1b) (tΒuΟΗ)Μe3ΝF (di- tBuOH)2Me2NF (Ia)-C7H18NOF (Ib)-C10H24NOF