90324-69-9Relevant articles and documents
Catalytic hydrogenation of functionalized amides under basic and neutral conditions
John, Jeremy M.,Loorthuraja, Rasu,Antoniuk, Evan,Bergens, Steven H.
, p. 1181 - 1186 (2015/02/19)
A new, base-free high turnover number (TON) catalyst for hydrogenation of simple and functionalized amides is prepared by reacting [Ru(η3-C3H5)(Ph2P(CH2)2NH2)2]BF4 and BH4- under hydrogen. The hydrogenation proceeds with C-N cleavage to form the corresponding amine and alcohol. The base-free and base-promoted hydrogenations tolerate alcohols, amines, aromatic bromides, chlorides and fluorides, ethers, certain olefins, and N-heterocyclic rings. The reaction was used to deprotect the amine groups in certain acetyl amides to form, for example, an N-heterocyclic amine containing an aryl bromide. The base-free system also selectively hydrogenates N-acyloxazolidinones without epimerization at the α-position, and reduced β-lactams to form the corresponding amino alcohols.
Sensitizer/Initiator Combination for Negative-Working Thermal-Sensitive Compositions Usable for Lithographic Plates
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, (2009/09/26)
The radiation-sensitive composition and the negative working imageable element include a cationic IR absorber with tetraarylborate counteranion and an onium initiator with tetraarylborate counteranion. The use of these components provides high imaging sensitivity, good shelflife and high print run length.
