2650-40-0Relevant articles and documents
PYRAZINE GPR40 AGONISTS FOR THE TREATMENT OF TYPE II DIABETES
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Paragraph 0279-0280, (2016/02/03)
Disclosed are compounds, compositions and methods for treating of disorders that are affected by the modulation of the GPR40 receptor. Such compounds are represented by Formula (I) as follows: wherein R1, G, and R2 are defined herein.
Reactions of Cyclohexane Derivatives in Superacids
Dean, Christopher,Whittaker, David
, p. 1541 - 1543 (2007/10/02)
The reactions of menthol with FSO3H-SO2 and neomenthyl chloride with SbF5-SO2ClF follow different routes.The first yields a substituted cyclopentyl cation and the second a substituted cyclohexyl cation.Experiments on substituted cyclohexyl chlorides show that replacement of all the hydrogen atoms on the next but one carbon atom to the reaction centre blocks formation of a carbocation.It is suggested that ionisation of an equatorial chlorine atom takes place with assistance from an intramolecular electronic interaction, forming the methyl cyclopentyl carbocation in a synchronous process, rather than stepwise via the cyclohexyl carbocation.Reasons for contrasting behaviour in solvolytic reactions are discussed.
Activation of Reducing Agents. Sodium Hydride Containing Complex Reducing Agents. 13. Selective Heterogeneous Hydrogenation of Polyfunctional Substrates over Nic
Gallois, Philippe,Brunet, Jean-Jaques,Caubere, Paul
, p. 1946 - 1950 (2007/10/02)
Preparative-scale heterogeneous hydrogenation over Nic at room temperature and 1 atm are described.It is shown that these catalysts allow the selective hydrogenation of carbon-carbon double bonds in the presence of oxo groups without side reactions.Alkynes and functional alkynes are selectively hydrogenated to the corresponding cis alkenes in high yields.Carbonyl group hydrogenations were also performed in high yields.Selective hydrogenation properties of Nic were exemplified in the steroid series.Finally, it was demonstrated that this new catalyst-preparation concept is not limited to nickel and also applies to the preparation of cobalt and palladium catalysts.