Compounds of the formula (I) in which R
1
, R
2
, R
3
, R
4
and R
5
have the meanings indicated in claim
1
are inhibitors of tyrosine kinases, in particular of met kinase and can be employed inter alia for the treatment of tumours.
2,4,4,6-Tetrabromo-2,5-cyclohexadienone as an efficient reagent for phosphine-free electrophilic transformation of alcohols and epoxides
作者:Aslan Khajeh-Kolaki、Babak Mokhtari
DOI:10.1080/17415993.2015.1126594
日期:2016.5.3
a stable phosphine-free reagent for the conversion of alcohols into alkyl thiocyanates and epoxides into 2-hydroxythiocyanates. The reactions seem to proceed via in situ generation of electrophilic sulfur species by reaction of NH4SCN and TABCO. This combined reagent worked well with both alcohols and epoxides in acetonitrile solvent and under solvent-free conditions. GRAPHICAL ABSTRACT