Synthesis of Highly Substituted Oxazoles through Iodine(III)-Mediated Reactions of Ketones with Nitriles
作者:Akio Saito、Nao Hyodo、Yuji Hanzawa
DOI:10.3390/molecules170911046
日期:——
trifluoromethanesulfonic acid (TfOH) or bis(trifluoromethane-sulfonyl)imide (Tf2NH), iodosobenzene (PhI=O) efficiently promoted the reactions of dicarbonyl compounds as well as monocarbonyl compounds with nitriles to give 2,4-disubstituted and 2,4,5-trisubstituted oxazole in a single step under the mild conditions.
[EN] MORPHOLINONE COMPOUNDS AS FACTOR IXA INHIBITORS<br/>[FR] COMPOSÉS DE MORPHOLINONE EN TANT QU'INHIBITEURS DE FACTEUR IXA
申请人:MOCHIDA PHARM CO LTD
公开号:WO2010065717A1
公开(公告)日:2010-06-10
The present invention provides a compound of Formula (I) as described herein, or a pharmaceutically acceptable salt or a solvate thereof. The present invention also provides pharmaceutical compositions comprising one or more said compounds, and methods for using said compounds for treating or preventing a thromboses, embolisms, hypercoagulability or fibrotic changes.
THE BF<sub>3</sub>-CATALYZED DECOMPOSITION OF DIAZO CARBONYL COMPOUNDS IN NITRILES. FORMATION OF ENAMIDES
作者:Toshikazu Ibata、Masahiko Yamamoto
DOI:10.1246/cl.1981.161
日期:1981.2.5
The BF3-catalyzed decomposition of α-diazoacetopheones in acetonitrile, propionitrile, or methyl thiocyanate in the presence of 1,3,5-trimethoxybenzene produced enamides (7) in good yield.
A practicalone‐pot protocol for the synthesis of 2,5‐disubstitutedoxazoles from 1‐aryl‐2‐nitroethanones was reported. In the presence of iron/AcOH in acetonitrile, the reaction of 1‐aryl‐2‐nitroethanones with trimethyl orthoacetate or trimethyl orthobenzoate delivered the corresponding 2,5‐disubstitutedoxazoles in moderate to good yields.
One-pot preparation of 2,5-disubstituted and 2,4,5-trisubstituted oxazoles from aromatic ketones with molecular iodine, oxone, and trifluoromethanesulfonic acid in nitriles
Alkyl aryl ketones were successfully converted into the corresponding 2,5-disubstituted and 2,4,5-trisubstituted oxazoles in good to moderate yields in a one-pot manner, utilizing iodine, Oxone®, and trifluoromethanesulfonic acid in nitriles under transition-metal-free conditions. The present method could be used for the preparation of Oxaprozin from benzyl phenyl ketone and succinonitrile. A possible