. The molecular rearrangement of carbon compounds. line hydrochloride, andthen begins the methylation of the benzene ring. In accordancewith the hypothesis advanced in this , the experi-mental results shov/ that rearrangement takes place only when thequarternary stage is reached. In the light of our hypothesis neither methyl anilinenor dimethyl aniline can rearrange into corresponding is true because they cannot form quarternary compounds dueto the absence of an acid or negative group. The amine nitrogenatom must be pentavalent before rearrangement can take place.
. The molecular rearrangement of carbon compounds. line hydrochloride, andthen begins the methylation of the benzene ring. In accordancewith the hypothesis advanced in this , the experi-mental results shov/ that rearrangement takes place only when thequarternary stage is reached. In the light of our hypothesis neither methyl anilinenor dimethyl aniline can rearrange into corresponding is true because they cannot form quarternary compounds dueto the absence of an acid or negative group. The amine nitrogenatom must be pentavalent before rearrangement can take and Hov/ard {f-npublished work) heated methyl aniline anddimethyl aniline at 240-50 for four hours but found that no re-arrangement took place under the conditions of the experiment,thus refuting the careless statement found in many text books thatmethyl aniline will rearrange into toluidine under the influenceof heat. The mechanism of the rearrangement of methyl aniline hy-drochloride may be represented by the following reactions as point.
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