✍ Scribed by Yasuhiro Kamitori
No coin nor oath required. For personal study only.
1,1,1‐Trifluoro‐2,3‐alkanediones 2 easily obtainable from various aldehyde dialkylhydrazones were reacted with several diamines to afford trifluoromethylquinoxalines 3 and trifluoromethylpyrazines 4 in good yields. With the use of aldehydes and aqueous ammonia instead of diamines, diketones 2 were successfully converted to the corresponding 4‐trifluoromethylimidazoles 5 in satisfactory yields.
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## Abstract The fluorine‐containing __trans__‐1,2‐cyclopropane derivatives **4ba**–**4dd** were synthesized from the fluorine‐containing electron‐deficient alkenes **3a**–**3d** with semistabilized arsonium ylides **2b**–**2d**, in biphasic system of dichloromethane‐50% aqueous sodium hydroxide, ge
## Abstract magnified image Reaction 2‐(α‐chloroalkyl)benzimidazoles **1** with aryl sulphinate sodium salt **2** under solvent‐free conditions in the presence of tetrabutylammonium bromide as surface catalyst, by simple physical grinding using mortar and pestle, gives 1__H__‐2‐(α‐arylsulfonylalkyl