Carbon-13-proton coupling constants in carbocations. 5. Trishomocyclopropenium cations generated from bicyclo [3.1. 0] hex-3-yl, tricyclo [3.2. 1.02, 4] oct-8-yl, and …

…, JJ Giansiracusa, DR Leslie, ID McKern…

Index: Kelly, David P.; Giansiracusa, Joseph J.; Leslie, D. Ralph; McKern, Ian D.; Sinclair, Georgia C. Journal of Organic Chemistry, 1988 , vol. 53, # 11 p. 2497 - 2504

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Citation Number: 13

Abstract

One-bond WH coupling constants have been measured, for the trishomocyclopropenium cations derived from bicyclo [3. l. 0] hex-3-yl (I), tricyclo [3.2. 1.02~ 4] oct-8-yl,(12, 14) and pentacyclo [4.3. 0.02~ 4.03~ 8.05~ 7] non-9-yl (26, 27) precursors under stable ion conditions and compared with those of the corresponding model ketones. The AJ values thus obtained for the bridging carbons (21-32 Hz) and the adjacent methylene or methine ...