“TPG-lite”: A new, simplified “designer” surfactant for general use in synthesis under micellar catalysis conditions in recyclable water
作者:Ruchita R. Thakore、Balaram S. Takale、Yuting Hu、Selene Ramer、Jakub Kostal、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1016/j.tet.2021.132090
日期:2021.5
Using the oxidized, carboxylic acid-containing form of MPEG-750, esterification with racemic vitamin E affords a new surfactant (TPG-lite) that functions as an enabling, nanoreactor-forming amphiphile for use in many types of important reactions in synthesis. The presence of a single ester bond is suggestive of simplified treatment as a component of (eventual) reaction waste water, after recycling
[EN] PROCESS FOR PREPARATION OF CERITINIB<br/>[FR] PROCÉDÉ DE PRÉPARATION DE CÉRITINIB
申请人:DR REDDY'S LABORATORIES LTD
公开号:WO2016199020A1
公开(公告)日:2016-12-15
The present application relates to a process for preparation of ceritinib and intermediates thereof. Specifically, the present application relates to a process for preparation of N-(4-(1-benzyl- 1,2,3,6-tetrahydropyridin-4-yl)-2-isopropoxy-5-methylphenyl)acetamide (VC) comprising treating N-(4-(bromomethyl)-2-isopropoxy-5-methylphenyl)acetamide (IIID) with 1- benzylpiperidin-4-one (IVA). The present application also relates to a process for conversion of N-(4-(1-benzyl-1,2,3,6-tetrahydropyridin-4-yl)-2-isopropoxy-5-methylphenyl)-acetamide (VC) to ceritinib or an acid-addition salt thereof.
Carbonyl Iron Powder: A Reagent for Nitro Group Reductions under Aqueous Micellar Catalysis Conditions
作者:Nicholas R. Lee、Agata A. Bikovtseva、Margery Cortes-Clerget、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1021/acs.orglett.7b03216
日期:2017.12.15
An especially mild, safe, efficient, and environmentally responsible reduction of aromatic and heteroaromatic nitro-group-containing educts is reported that utilizes very inexpensive carbonyl iron powder (CIP), a highly active commercial grade of iron powder. These reductions are conducted in the presence of nanomicelles composed of TPGS-750-M in water, a recyclable aqueous micellar reaction medium
High Turnover Pd/C Catalyst for Nitro Group Reductions in Water. One-Pot Sequences and Syntheses of Pharmaceutical Intermediates
作者:Xiaohan Li、Ruchita R. Thakore、Balaram S. Takale、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1021/acs.orglett.1c03258
日期:2021.10.15
Commercially available Pd/C can be used as a catalyst for nitrogroupreductions with only 0.4 mol % Pd loading. The reaction can be performed using either silane as a transfer hydrogenating agent or simply a hydrogen balloon (∼1 atm pressure). With this technology, a series of nitro compounds was reduced to the desired amines in high chemical yields. Both the catalyst and surfactant were recycled