Photochemical benzylic bromination in continuous flow using BrCCl<sub>3</sub> and its application to telescoped <i>p</i>-methoxybenzyl protection
作者:Yuma Otake、Jason D. Williams、Juan A. Rincón、Oscar de Frutos、Carlos Mateos、C. Oliver Kappe
DOI:10.1039/c9ob00044e
日期:——
BrCCl3 represents a rarely used benzylic brominating reagent with complementary reactivity to other reagents. Its reactivity has been revisited in continuous flow, revealing compatibility with electron-rich aromatic substrates. This has brought about the development of a p-methoxybenzyl bromide generator for PMB protection, which was successfully demonstrated on a pharmaceutically relevant intermediate
Highly efficient Amination in Neat Water of Benzyl Chlorides with Dialkylformamides Catalysed by <i>N</i>-Heterocyclic Carbene-Palladium(II)-1-Methylimidazole Complex
作者:Wen-Xin Chen、Cai-Yun Zhang、Jian-Mei Lu
DOI:10.3184/174751913x13787959859344
日期:2013.10
Dialkylformamides are excellent N-sources in the amination of benzylchlorides when catalysed by a NHC-Pd(II)-Im complex. In the presence of NaOH and the catalyst, variously substituted benzylchlorides and five different dialkylformamides reacted smoothly to afford the corresponding N,N-dialkyl-benzylamines in good to almost quantitative yields in eco-friendly solvent water at 50 °C within 3 h.
[EN] DPP-IV INHIBITORS<br/>[FR] INHIBITEURS DE LA DPP-IV
申请人:GRAFFINITY PHARMACEUTICALS AG
公开号:WO2005095343A1
公开(公告)日:2005-10-13
The invention relates to compounds of formula (I), Z-C(R<1>R<2>)-C(R<3>NH2)-C(R<4>R<5>)-X-N(R<6>R<7>), wherein Z, R<1-7> and X have the meaning as cited in the description and the claims. Said compounds are useful as DPP-lV inhibitors. The invention also relates to the preparation of such compounds as well as the production and use thereof as medicament.
Bench-Stable <i>N</i>
-Heterocyclic Carbene Nickel Precatalysts for C−C and C−N Bond-Forming Reactions
作者:Felix Strieth-Kalthoff、Ashley R. Longstreet、Jessica M. Weber、Timothy F. Jamison
DOI:10.1002/cctc.201800454
日期:2018.7.9
Herein, we introduce a new class of bench‐stable N‐heterocycliccarbene (NHC) nickel‐precatalysts for homogeneous nickel‐catalysis. The nickel(II) complexes are readily activated to Ni0 in situ under mild conditions, via a proposed Heck‐type mechanism. The precatalysts are shown to facilitate carbonyl‐ene, hydroalkenylation, and amination reactions.
在此,我们介绍了一类新型的实验室稳定的N杂环卡宾 (NHC) 镍预催化剂,用于均相镍催化。通过提出的 Heck 型机制,镍 (II) 配合物在温和条件下很容易原位活化为 Ni 0 。该预催化剂被证明可以促进羰基、加氢烯基化和胺化反应。
PREPARATION OF HALOGENATED DI-SUBSTITUTED BENZYLAMINES, PARTICULARLY HALOGENATED DIALKYLBENZYLAMINES
申请人:BAYER CROPSCIENCE AKTIENGESELLSCHAFT
公开号:US20160304435A1
公开(公告)日:2016-10-20
The present invention relates to a novel process for preparing halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines.