[H-].[Al+3].[Li+].[H-].[H-].[H-].[O:7]1[C:11]2([CH2:16][CH2:15][CH:14]([C:17]([NH2:19])=O)[CH2:13][CH2:12]2)[O:10][CH2:9][CH2:8]1.O.ClCCl>C1COCC1>[NH2:19][CH2:17][CH:14]1[CH2:15][CH2:16][C:11]2([O:7][CH2:8][CH2:9][O:10]2)[CH2:12][CH2:13]1To 1.4 g (0.037 mole) of lithium aluminum hydride in 100 ml dry THF is added, portionwise, 4.9 g (0.026 mole) of 1,4-dioxaspiro[4,5]decane-8-carboxamide over one-half hour. This mixture is then refluxed 2 hours, then allowed to cool to room temperature. About 5 ml water is added cautiously and then stirred 15 minutes. Dichloromethane is then added and the insolubles filtered off. The organic layer is dried over MgSO4 and stripped to dryness, giving 3.48 g crude product. This material is vacuum-distilled to obtain 8-aminomethyl-1,4-dioxaspiro[4,5]decane (b.p. 84°-101° C. at 0.7 mm Hg.)
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