The present invention provides compounds of formula (I*):
their use as H
3
inhibitors, processes for their preparation, and pharmaceutical compositions thereof.
Manganese‐Catalyzed Hydroborations with Broad Scope
作者:Pradip Ghosh、Axel Jacobi von Wangelin
DOI:10.1002/anie.202103550
日期:2021.7.12
synthetic manipulation and chemical valorization. The applications of catalytic hydrofunctionalization benefit from the use of liquid reducing agents and operationally facile setups. Metal-catalyzed hydroborations provide a highly prolific platform for reductive valorizations of stable C=X electrophiles. Here, we report an especially facile, broad-scope reduction of various functions including carbonyls
Brønsted acidic ionic liquids (ILs) have been synthesized and investigated as catalysts in esterification and transesterification reactions: simple and non-corrosive salts characterized by aliphatic cations associated with an “acidic” anion (in particular, [HSO4]−) gave the higher yields. A quite good correlation between IL acidity (H0) and catalytic ability was found although also the hydrophilic nature of the ionic medium probably affects the process efficiency.
Aluminium complex as an efficient catalyst for the chemo-selective reduction of amides to amines
作者:Suman Das、Himadri Karmakar、Jayeeta Bhattacharjee、Tarun K. Panda
DOI:10.1039/c9dt01806a
日期:——
(HBpin) to afford the corresponding amines in high yields using aluminiumcomplexes [κ2-Ph2P(X)NC9H6N}Al(Me)2] [X = S (2a), Se (2b)] as pre-catalysts at room temperature. The aluminiumcomplexes were prepared from the reaction of [Ph2P(X)NC9H6N] [X = S (1a), Se (1b)] and trimethylaluminium in toluene. The solid-state structure of complex 2b is established. Tertiary amides with a wide array of electron-withdrawing