General and Phosphine‐Free Cobalt‐Catalyzed Hydrogenation of Esters to Alcohols
作者:Zhihui Shao、Rui Zhong、Raffaella Ferraccioli、Yibiao Li、Qiang Liu
DOI:10.1002/cjoc.201900292
日期:2019.11
Catalytic hydrogenation of esters is essential for the sustainable production of alcohols in organic synthesis and chemical industry. Herein, we describe the first non‐noble metal catalytic system that enables an efficient hydrogenation of non‐activated esters to alcohols in the absence of phosphineligands (with a maximum turnover number of 2391). The general applicability of this protocol was demonstrated
Nitrogen-containing monodentate phosphines and their use in catalysis
申请人:Zapf Alexander
公开号:US20070123707A1
公开(公告)日:2007-05-31
The present invention relates to novel nitrogen—containing monodentate phosphane ligands of formula (I) and to their use in catalytic reactions, especially in the improvement of haloaromatic compounds.
A Tailored Versatile and Efficient NHC‐Based NNC‐Pincer Manganese Catalyst for Hydrogenation of Polar Unsaturated Compounds
作者:Zeyuan Wei、Hengxu Li、Yujie Wang、Qiang Liu
DOI:10.1002/anie.202301042
日期:2023.6.5
greatly enhanced via rational design of a strong electron-donating and sterically unhindered NHC-based NNC-pincer ligand. This newly developed NNC-pincer Mn catalyst is highly effective for the hydrogenation of a broad range of polar unsaturatedcompounds (>80 examples) including esters, N-heteroarenes, amides, carbonates, and urea derivatives, under relatively mild conditions.
Bis(N‐Heterocyclic Carbene) Manganese(I) Complexes: Efficient and Simple Hydrogenation Catalysts
作者:Niklas F. Both、Anke Spannenberg、Haijun Jiao、Kathrin Junge、Matthias Beller
DOI:10.1002/anie.202307987
日期:2023.8.28
Manganese(I) complexes bearing simple, non-bifunctional bis(NHC) ligands were investigated as hydrogenation catalysts. Applying these complexes with KHBEt3 as additive, various carboxylic acid esters and, additionally, ketones, nitriles, N-heteroarenes and alkenes were successfully hydrogenated. Mechanistic investigations by control experiments and DFTcalculations indicate an inner-sphere mechanism and reveal
Monomethylvaline compounds having phenylalanine side-chain modification at the C-terminus
申请人:Seattle Genetics, Inc.
公开号:US10000555B2
公开(公告)日:2018-06-19
Auristatin peptide analogs of MeVal-Val-Dil-Dap-Phe (MMAF) are provided having C-terminal phenylalanine residue side chain replacements or modifications which are provided alone or attached to ligands through various linkers. The related conjugates can target specific cell types to provide therapeutic benefit.
提供的 MeVal-Val-Dil-Dap-Phe (MMAF) Auristatin 肽类似物具有 C 端苯丙氨酸残基侧链替换或修饰,可单独提供或通过各种连接体连接到配体上。相关共轭物可靶向特定细胞类型,提供治疗效果。