Source of materialToane thanol solution (10 ml) of 2-hydroxy-1-naphthaldehyde (349.5 mg, 2.01 mmol) wasadded anethanol solution (3 ml) of 1,4-bis(aminooxy)butane (120.12 mg, 1.0 mmol). After the solution hadbeen stirred at55°Cfor 4h,the mixture wasfiltered, washed successively with ethanoland ethanol/hexane (1:4), respectively. DiscussionRecently, agreatdealofattention hasfocused on aseriesof N , N ¢ -bis(salicylidene)ethylenediamine (salen) and its derivatives [1,2], because these compounds easily form metallosalenc omplexes and some of them have excellent catalyticactivities for epoxidation, aziridination, etc. [3,4]. Inaddition, they are also used asmodels of reaction centers of metalloenzymes [5,6], and nonlinearopticalmaterials [7]. Moreover,inbiologicaland artificialsystems allosteric regulation is effective in controlling molecularf unctions, such asm olecularr ecognition and biological activity [8]. Totune or improve such functions, chemicalmodifications of abasic salen skeleton is very interesting and important [9][10][11][12]. Sothe introduction of some functionalgroups or substitution of some partswith appropriate ones are effective and inevitable. Some of such compounds have two salicylidene units, but the linkage waslimited to analkylene (-CH = N-C-X-C-N = CH-) group due to the ease of preparation. Ifan O -alkyloxime moiety which is observed for 2-hydroxy-1-naphthaldehyde. The title compound is sufficiently stable to resist scrambling of the C = N bonds. This maybeascribed to lower reactivity of the oxime C = N bonds toward nucleophiles.

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