References
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- 1,3,5-Triphenylhexahydro-1,3,5-triazine can be prepared by the conventional method with aniline and formaldehyde. This can be converted to N-(methoxymethyl)aniline under reflux with sodium methoxide in methanol except 2f.
- Matsumura , Y. and Tomita , T. 1994 . Tetrahdron Lett. , 35 : 3737 Recently optically pure α-amino acids were prepared via α-azidoamine. see
- Reaction Products 3a and 3c were readily decomposed with loss of azide during flash chromatography
- As we reported early in ref. 1 we tentatively assume that the intermediate 5 is served as a N-methyleneamine equivalent excluding possibility of C-OCH3 bond cleavage before a nucleophile attacks. However, in case of α-alkoxycarbamate iminium ions i.e. conjugated N-acylium intermediate was generated as an equilibrium with the removal of alkoxy group in the presence of Lewis acids detected by 1H and 13C NMR spectra.15
- Yamamoto , Y. , Nakada , T. and Nemoto , H. 1992 . J. Am. Chem. Soc. , 114 : 121