Spiro piperidines. I. Synthesis of spiro [isobenzofuran-1 (3H), 4'-piperidines] and spiro [isobenzofuran-1 (3H), 3'-piperidines]

A Marxer, HR Rodriguez, JM McKenna…

Index: Marxer; Rodriguez; McKenna; Tsai Journal of Organic Chemistry, 1975 , vol. 40, # 10 p. 1427 - 1433

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Citation Number: 44

Abstract

Synthesis of Spiro [isobenzofuranpiperidines] J. Org. Chem., Vol. 40, No. 10, 1975 1427 solution was refluxed for 3 hr. After cooling, a few drops of a saturated solution of sodium sulfate were added, and the white solid was removed by filtration. The solid was washed with acetone, then extracted with chloroform in a Soxhlet for 48 hr. From the filtrate and the clhloroform extract a total of 51 mg of 7a was ob-tained: mp 176--178O; urn=(KBr) 3400, ...