Synthesis and stereochemistry of stereoisomeric 1,3-benzoxazino-1,3- and -3,1-benzoxazines |
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| Authors: | L szl L z r,Ferenc Fü l p,G bor Bern th,Alajos K lm n,Gyula Argay |
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| Affiliation: | László Lázár,Ferenc Fülöp,Gábor Bernáth,Alajos Kálmán,Gyula Argay |
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| Abstract: | Partly saturated 3,1-benzoxazino[1,2-c][1,3]benzoxazines and 1,3-benzoxazino[3,2-c][1,3]benzoxazines were prepared in one-pot syntheses from different cyclic 1,3-aminoalcohols by treatment with salicylaldehyde or 5-bromosalicylaldehyde, followed by formaldehyde. The structures of tetracycles 3a and 5 were determined by means of X-ray diffraction. |
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