Borrowing Hydrogen: Indirect “Wittig” Olefination for the Formation of C–C Bonds from Alcohols
作者:Phillip J. Black、Michael G. Edwards、Jonathan M. J. Williams
DOI:10.1002/ejoc.200600070
日期:2006.10
development of an indirect three-step domino sequence for the formation of C-Cbondsfromalcohol substrates is described. An iridium-catalysed dehydrogenation of alcohol I affords the intermediate aldehyde 2. The desired C-C bond can then be formed by a facile Wittigolefination, yielding the intermediate alkene 3. In the final step the alkene is hydrogenated to afford the indirectWittig product, the
描述了从醇底物形成 CC 键的间接三步多米诺骨牌序列的成功开发。醇 I 的铱催化脱氢得到中间体醛 2。然后可以通过简单的 Wittig 烯化形成所需的 CC 键,产生中间体烯烃 3。在最后一步中,烯烃被氢化以提供间接的 Wittig 产物,即烷烃 4. 这个过程的关键是借氢的概念;在最初的脱氢步骤中除去的氢气被铱催化剂简单地借用。作为储氢器,催化剂促进 CC 键的形成,然后在最后一步返回借用的氢。在此,我们将详细介绍我们对底物和反应范围以及催化循环的局限性的研究。((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)。
Dehydrogenation of 5-hydroxymethylfurfural to diformylfuran in compressed carbon dioxide: an oxidant free approach
The dehydrogenation of biomass-based 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) was achieved utilizing an activated carbon supported rhodium (Rh/C) catalyst under mild reaction conditions.
[EN] PRODUCTION OF TRI-METHYL BENZENE DERIVATIVES<br/>[FR] PRODUCTION DE DÉRIVÉS DE BENZÈNE TRI-MÉTHYLE
申请人:RHODIA OPERATIONS
公开号:WO2018229237A1
公开(公告)日:2018-12-20
The present invention relates to the production of tri-functional aromatic molecules from diformylfuran, in particular to the production of tri-methyl benzene derivatives such as for example trimellitic acid or 1,2,4-tri(aminomethyl)benzene from diformylfuran and its derivatives.
[EN] PRODUCTION OF XYLENE DERIVATIVES<br/>[FR] PRODUCTION DE DÉRIVÉS DE XYLÈNE
申请人:RHODIA OPERATIONS
公开号:WO2017097220A1
公开(公告)日:2017-06-15
The present invention relates to the production of xylene derivatives from furfural and its derivatives. The invention describes new routes for converting furfural and its derivatives into xylene derivatives including novel intermediates.
[EN] PRODUCTION OF BENZENE DERIVATIVES<br/>[FR] PRODUCTION DE DÉRIVÉS DE BENZÈNE
申请人:RHODIA OPERATIONS
公开号:WO2021114207A1
公开(公告)日:2021-06-17
A method of producing benzene derivatives from furfural and its derivatives. Provided are routes for converting furfural and its derivatives into benzene derivatives including its intermediates.