Sulfur tetrafluoride converts aliphatic nitro acids to the corresponding trifluoromethyl compounds. The yield is poor with primary nitro acids; but high yields of fluoronitrocarbons, otherwise difficult to obtain, are produced from certain γ-substituted butyric acids and from substituted acrylic acids. Eleven new fluoronitrocarbons are described.
Reaction of allylmagnesiumbromide with trifluoromethyl oximes is different than with other Grignard reagents. On the other hand, allylmagnesiumbromide acted as a reducing agent towards trifluoromethyl ketones. By using an excess of this Grignard reagent, an exclusive addition reaction is obtained. A single electron reaction is suggested to explain the reductive process.
The 5‐diethoxyphosphonyl‐5‐methyl‐1‐pyrroline N‐oxide superoxide spin adduct (DEPMPOOOH) is much more persistent (about 15 times) than the 5,5‐dimethyl‐1‐pyrroline N‐oxide superoxide spin adduct (DMPOOOH). The diethoxyphosphonyl group is bulkier than the methyl group and its electron‐withdrawing effect is much stronger. These two factors could play a role in explaining the different half‐lifetimes