作者:Rodney S. Henry、Frank G. Riddell、William Parker、C. Ian F. Watt
DOI:10.1039/p29760001549
日期:——
7-exo-Hydroxybicyclo[3.3.1]nonan-3-one (1a) and the 1-methyl homologue (1b) have been synthesised and found to undergo a rapid base-induced intramolecular 3,7-hydride shift. In the case of (1a), the associated activation energy (ΔG‡ 19.4 ± 0.2 kcal mol–1 at 113 °C) has been determined by variable temperature 1H n.m.r. spectroscopy.
已经合成了7-外-羟基双环[3.3.1]壬南-3-酮(1a)和1-甲基同系物(1b),发现它们经历了快速的碱诱导的分子内3,7-氢化物转变。对于(1a),已通过可变温度1 H nmr光谱法确定了相关的活化能(在113°C下ΔG ‡ 19.4±0.2 kcal mol –1)。