Study on the Reactivity of the Alkene Component in Ruthenium-Catalyzed [2 + 2] Cycloadditions between an Alkene and an Alkyne. Part 1
作者:Robert W. Jordan、William Tam
DOI:10.1021/ol016174i
日期:2001.7.1
[reaction: see text] The ruthenium-catalyzed [2 + 2] cycloadditions of 7-substituted norbornadienes with an alkyne have been investigated. The cycloadditions were found to be highly regio- and stereoselective, giving only the anti-exo cycloadducts as the single regio- and stereoisomers in good yields. The results on the relative rate of different 7-substituted norbornadienes in the Ru-catalyzed [2 +
Synthesis and use of 7-substituted norbornadienes for the preparation of prostaglandins and prostanoids
作者:Anthony D. Baxter、Falmai Binns、Tariq Javed、Stanley M. Roberts、Peter Sadler、Feodor Scheinmann、Basil J. Wakefield、Marcus Lynch、Roger F. Newton
DOI:10.1039/p19860000889
日期:——
Syntheses of 7-substituted norbornadienes from 7-t-butoxy- and 7-halogeno-norbornadienes are described. Rearrangement of the products in the presence of peracetic acid gives bicyclic aldehydes (2) in equilibrium with enol ethers (3) which are hydrolysed to hydroxycyclopentenylacetaldehydes (4), and converted into key intermediates for the synthesis of prostaglandins and their analogues. Syntheses of