Journal of Organic Chemistry p. 4327 - 4329 (1982)
Update date:2022-08-05
Topics:
Rolla, Franco
Under phase-transfer catalysis (PTC) conditions organic azides are reduced to amines in high yields by aqueous sodium borohydride: aryl and arylsulfonyl azides give the corresponding amino derivatives at room temperature, while alkyl azides require more drastic conditions (80 deg C). tert-Butyl 2-azido-2-phenylacetate, after reduction at room temperature and acidic workup, gives phenylglycine in a 72percent overall yield.The PTC technique allows the conversion of alkyl chlorides, bromides, and methanesulfonates into pure primary amines via a one-pot procedure by reacting a mixture of the substrate and a PTC agent first with aqueous NaN3 and then with aqueous NaBH4.
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(2021)