Why are simple chiral amines (like $$N(CH_3)(Et)(Pr)$$ ) not optically active at room temperature?

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Why are simple chiral amines (like  $$N(CH_3)(Et)(Pr)$$  ) not optically active at room temperature?

Canvas Classes · Accepted Answer

Due to rapid Pyramidal Inversion (Nitrogen flipping). The low energy barrier ( $$\approx 25 	ext{ kJ/mol}$$  ) causes rapid interconversion of enantiomers.

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