gem-Bromonitro compounds or gem-dinitro compounds couple with carbanions derived from α-cyano sulfones or α-carbonyl sulfones to give β-nitro sulfones. The nitro and sulfonyl groups are eliminated from the coupling products on treatment with reductive one electron transfer reagents to give α,β-unsaturated carbonyl compounds or nitriles.
Non-reductive decyanation reactions of disubstituted malononitrile derivatives promoted by NaHMDS
作者:Daisuke Domon、Masaru Iwakura、Keiji Tanino
DOI:10.1016/j.tetlet.2017.04.012
日期:2017.5
achieving the decyanation of disubstituted malononitrilederivatives without using reducing agents has been developed. Treatment of a six-membered malononitrilederivative with NaHMDS followed by methanol afforded the corresponding acetonitrile derivative in high yield. The present method was applicable to the decyanation reactions of a variety of malononitriles including four- and five-membered compounds
Novel Piperidine/8-Azabicyclo [3.2.1.] Octan Derivatives As Modulators Of Chemokine Receptor Ccr5
申请人:Tucker Howard
公开号:US20080021038A1
公开(公告)日:2008-01-24
Compounds of formula (I) wherein neither R
4
nor R
5
is hydrogen; compositions comprising them, processes for preparing them and their use in medical therapy (for example modulating CCR5 receptor activity in a warm blooded animal).
Inhibitors of Hepatitis C virus NS3 serine protease
申请人:VERTEX PHARMACEUTICALS INCORPORATED
公开号:EP2314598A1
公开(公告)日:2011-04-27
The present invention relates to compounds, methods and pharmaceutical compositions for inhibiting proteases, particularly serine proteases, and more particularly HCV NS3 proteases. The compounds, and the compositions and_methods that utilize them, can be used, either alone or in combination to inhibit viruses, particularly HCV virus.