This disclosure describes certain 11-hydroxy and 11-deoxy-9-keto(or hydroxy)-prostanoic acid derivatives useful as bronchodilators, hypotensive agents, anti-ulcer agents, or as intermediates.
Mild and efficient CO-mediated eliminative deoxygenation of epoxides catalyzed by supported gold nanoparticles
作者:Ji Ni、Lin He、Yong-Mei Liu、Yong Cao、He-Yong He、Kang-Nian Fan
DOI:10.1039/c0cc02783a
日期:——
Supportedgoldnanoparticles (NPs), which are well-known epoxidation catalysts, were found to be exceptionally active for the selective deoxygenation of epoxides into alkenes using cheap and easily accessible CO and H(2)O as the reductant.
Catalytic N-oxidation of tertiary amines on RuO2NPs anchored graphene nanoplatelets
作者:Mayakrishnan Gopiraman、Hyunsik Bang、Sundaram Ganesh Babu、Kai Wei、Ramasamy Karvembu、Ick Soo Kim
DOI:10.1039/c3cy00963g
日期:——
pattern (XRD) of GNPs–RuO2NPs revealed that the chemical state of Ru on GNPs was +4. After the optimization of reaction conditions for N-oxidation of triethylamine, the scope of the reaction was extended to various aliphatic, alicyclic and aromatic tertiaryamines. The GNPs–RuO2NPs showed excellent catalytic activity in terms of yields even at a very low amount of Ru catalyst (0.13 mol%). The GNPs–RuO2NPs
When tertiaryamines 1 are reacted with perfluoro cis-2,3-dialkyloxaziridines 2 at −60°C corresponding N-oxides 3 are formed in high yields. The process is chemoselective and diastereoselective. The chemoselectivity in the reaction of alkenyl substituted pyridines is solvent dependent, attack occurring exclusively at the carbon-carbon double bond or at the nitrogen atom under protic and aprotic conditions
Rhenium-Catalyzed Highly Efficient Oxidations of Tertiary Nitrogen Compounds to <i>N</i>-Oxides Using Sodium Percarbonate as Oxygen Source
作者:Bir Sain、Suman Jain、Jomy Joseph
DOI:10.1055/s-2006-951487
日期:2006.9
Sodiumpercarbonate was found to be an ideal and efficient oxygen source for the oxidation of tertiary nitrogen compounds to N-oxides in excellent yields in presence of various rhenium-based catalysts under mild reaction conditions.