A Low Rhodium Content Smart Catalyst for Hydrogenation and Hydroformylation Reactions
作者:Stefano Paganelli、Riccardo Tassini、Vikas D. Rathod、Barbara Onida、Sonia Fiorilli、Oreste Piccolo
DOI:10.1007/s10562-020-03407-5
日期:2021.5
of activity in hydrogenation and hydroformylation reactions of an easily produced 0.18% Rh/Al2O3. Analytical studies on fresh and recycled samples shed light on the smart properties of such catalyst. Results showed high activity as well as fine/excellent chemoselectivity or regioselectivity, characteristics that may suggest a wide range of applicability. The low metal content catalyst 0.18% Rh/Al2O3
本文描述了一种易于生产的 0.18% Rh/Al2O3 在氢化和加氢甲酰化反应中的制备、广泛表征和活性研究。对新鲜和回收样品的分析研究揭示了这种催化剂的智能特性。结果显示出高活性以及优良/优异的化学选择性或区域选择性,这些特征可能暗示着广泛的适用性。低金属含量催化剂 0.18% Rh/Al2O3 在氢化和加氢甲酰化反应中都非常活跃,因此为有价值的 API 提供中间体,如萘丁美酮和依曲普坦,以及一种带有清新绿色花香的香味,让人想起百合花的香味谷。
SYNTHESIS OF 3--5-[2-(PHENYLSULFONYL)ETHYL]-1H-INDOLE
申请人:Serafini Siro
公开号:US20110166364A1
公开(公告)日:2011-07-07
The present invention refers to the synthesis of 3-[(2R)-1-methylpyrrolidin-2-yl]methyl}-5-[2-(phenylsulfonyl)ethyl]-1H-indole, a drug known by the name Eletriptan, or of its salts. In particular, the present invention regards a process for the synthesis of Eletriptan or of its salt, comprising the following steps: a) Salifying the intermediate of Formula (6), using a dicarboxylic acid to obtain a derived salt; b) Optionally, purifying said raw salt obtained according to step a) by solvent crystallization to obtain a purified salt of the intermediate of Formula (6); c) Converting said salt of the intermediate of formula (6) according to step a) or said purified salt according to step b) into an intermediate of formula (10); d) Converting the intermediate of Formula (10) into Eletriptan or its salt.
A novel magnesium metal catalyzed synthesis of 5-ethyl-1H-indole from 5-[2-(phenyl sulfonyl)ethyl]-1H-indole by dephenylsulfonylation mechanism providing an alternative and attractive approach to 5-ethyl-1H-indole with high yields. This approach is for both the protected and unprotected indoles.
作者:Charlotte S. Richards-Taylor、David C. Blakemore、Michael C. Willis
DOI:10.1039/c3sc52332b
日期:——
electrophilic coupling partner, such as a benzylic, allylic or alkyl halide, an electron-poor arene, or a cyclic epoxide, to provide the corresponding sulfone products in good to excellent yields. The mild reaction conditions and use of commercially available reaction components allows the easy preparation of a broad range of sulfones featuring a variety of functional groups. The process obviates the need