Cyclization and Rearrangements of Farnesol and Nerolidol Stereoisomers in Superacids
摘要:
Acid-catalyzed cyclization of 2,3-trans- and 2,3-cis-farensol proceeds regioselectively and stereospecifically, yielding drimenol and epi-drimenol, respectively. The trans and cis isomers of nerolidol undergo carbo- and heterocyclization reactions. The trans isomer gives tricyclic caged hydrocarbons with new skeletal types, while the rearrangements of the cis isomer produce derivatives of 2-oxabicyclo-[4.4.0]decane. The ICAR computer program was used to derive reasonable mechanisms for the acid-catalyzed transformations of nerolidol, and the probability of the mechanisms was evaluated by the molecular mechanics method.
DOI:
10.1021/jo00085a044
作为产物:
描述:
橙花叔醇 在
氟磺酸 作用下,
以
various solvent(s) 为溶剂,
以0.032 g的产率得到1,3,7,8-tetramethyltricyclo<5.4.0.04,8>undec-2-ene
参考文献:
名称:
Polovinka, M. P.; Unzur, N. D.; Perutskii, V. B., Journal of Organic Chemistry USSR (English Translation), 1991, vol. 27, # 10, p. 1871 - 1885