13156-01-9Relevant articles and documents
Preparation of Trimethylsilyl Ethers of 3-Azetidinols . Scope and Limitations
Higgins, Robert H.,Watson, Monique R.,Faircloth, William J.,Eaton, Quentin L.,Jenkins, Harvey
, p. 383 - 387 (2007/10/02)
Preparation of the trimethylsilyl ethers of 1-alkyl-3-azetidinols from-non-hindered primary amines and epichlorhydrin by conversion of the intermediate 1-(alkylamino)-3-chloro-2-propanols to their trimethylsilylethers by either N-(trimethylsilyl)acetamide or by 1-(trimethylsilyl)imidazole followed by ring closure in acetonitrile is described.This sequence of reactions fails for aromatic amines, but appears to be general for all primary aliphatic amines, although the condensation of hindered amines with epichlorhydrin occurs slowly.Several novel azetidinols, in which the N-alkyl substituent insefl contains a second heterocyclic system, are reported.In addition, the pKA's of several m- and p-substituted 1-benzylazetidinols correlates well with the Hammett equation.