A Comprehensive Study of [2 + 2] Cycloadditions and Ene Reactions of Alkynyl Chromium and Tungsten Carbene Complexes with Enol Ethers and Ketene Acetals and of the Stereochemistry of the Electrocyclic Ring Opening of Cyclobutenyl Carbene Complexes. -Cyclobutenyl esters and their ring opened isomers
A comprehensive study of [2 + 2] cycloadditions and ene reactions of alkynyl chromium and tungsten carbene complexes with enol ethers and ketene acetals and of the stereochemistry of the electrocyclic ring opening of cyclobutenyl carbene complexes
β Scribed by Wulff, William D.; Faron, Katherine L.; Su, Jing; Springer, James P.; Rheingold, Arnold L.
- Book ID
- 125483301
- Publisher
- Royal Society of Chemistry
- Year
- 1999
- Weight
- 606 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1472-7781
- DOI
- 10.1039/A805718D
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
the line-shape changes allow the detection of two different dynamic processes, which may be assigned to inhibited rotations about the partial C C and C N double bonds of the E-isomers (Scheme 2). Above ca. 0Β°C conversion into the isomer with Z-configurated CC double bond, which contains an intramol
Described is the preparation of cyclobutanones via the [2+2]-cycloaddition of ketenes with olefins and the photolytic reaction of chromium-carbene complexes with olefins and dienes. A comparison of these two methods is reported.