作者:Péter Csomós、Gábor Bernáth、Pál Sohár、Antal Csámpai、Norbert De Kimpe、Ferenc Fülöp                                    
                                    
                                        DOI:10.1016/s0040-4020(01)00176-4
                                    
                                    
                                        日期:2001.4
                                    
                                    Diastereomeric 2-(phenylhydroxymethyl)cyclohexylamines were synthesised by reduction of 2-benzoylcyclohexylamines. (1S*,2R*)-2-Benzoylcyclohexylamine can be reduced diastereoselectively to the corresponding gamma -amino alcohol with sodium borohydride; for the trans counterpart (1R*,2R*)-2-benzoylcyclohexylamine, lithium aluminium hydride was found to be a selective reducing agent. In both cases, high syn selectivities were observed. The amino alcohols were transformed to the corresponding cyclohexane-fused tetrahydro-1,3-oxazin-2-ones and -2-thiones. The gamma -amino alcohols reacted with arylimidates to afford 4,5-dihydro-6H-1,3-oxazines. Their cyclization with phenyl isothiocyanate yielded 2-phenyliminotetrahydro-1,3-oxazines. (C) 2001 Elsevier Science Ltd. All rights reserved.