Sommelet–Hauser rearrangement, a Common card

The card carries these facts from its Wikipedia article.

• The reagent is sodium amide or another alkali metal amide and the reaction product a N,N-dialkylbenzylamine with a new alkyl group in the aromatic ortho position.
• For example, benzyltrimethylammonium iodide, [N3]I, rearranges in the presence of sodium amide to yield the o-methyl derivative of N,N-dimethylbenzylamine.
• Although the appearance is of one of the methyl groups migrating off the trimethylammonium group, the process is actually the a pericyclic reaction in which the nitrogen and its three methyl substituents migrate.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Sommelet–Hauser rearrangement article was read about 5,100 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 36 and blocks with 30: each hit it takes is cut by 12 %.

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The cards just above and just below Sommelet–Hauser rearrangement in the power ranking, all domains together.