Trimethylsilyl polyphosphate for intramolecular Friedel-Crafts cyclizations

EM Berman, HDH Showalter

Index: Berman, Ellen M.; Showalter, H. D. Hollis Journal of Organic Chemistry, 1989 , vol. 54, # 23 p. 5642 - 5644

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Citation Number: 20

Abstract

Chemical shifts are expressed in ppm from TMS and CFCl, as external references. Coupling constants are expressed in hertz. These characteristics were in agreement with those given in the 1iterat~ re. l~(18 mL) was carefully added, and the pH was adjusted to 6 or 7. The solution was left for the night, and then the organic phase was separated, washed, and dried over magnesium sulfate. Diethyl ether was distilled off, leaving a crude oil which was flash ...