Reduction of carbamate with LAH
Carbamates are usually reduced to N-methyl groups. There are numerous examples:



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Org. Lett. 2012, 14 (18), 4834–4837

But it is not always a given. In this next example, the nitrogen is part of a three-membered ring (aziridine). These nitrogens are better leaving groups than usual, cf. Ketone/aldehyde synthesis from N-acylazetidines or aziridines where the same kind of reactivity is observed:



Angew. Chem. Int. Ed. 2002, 41 (24), 4683–4685