A plan for distinguishing between some five-and six-membered ring ketones

WS Johnson, WE Shelberg

Index: Johnson; Shelberg Journal of the American Chemical Society, 1945 , vol. 67, p. 1745,1752

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Citation Number: 75

Abstract

The importance of a method for the accurate discrimination between five-and six-membered ring ketones is strikingly illustrated by the classical problem of the structure of the sterols, in which the application of the Blanc rule'served as the means of determining ring size.* The Blanc rule, however, is not general,'and erroneous conclusions resulting from its failure led to an incorrect structure of the sterol nucleus. The position of prominence which this rule, ...