Efficient stoichiometric Pauson-Khand reactions were realized in water as the only solvent, and in the presence of surfactants as additives. Use of the cationic surfactant CTAB provided good yields of cyclopentenones from the thermal reactions of pre-formed dicobalthexacarbonyl complexes of enynes a
Acceleration of the thermal pauson-khand reaction by coordinating ligands
✍ Scribed by Marie E. Kraff; Ian L. Scott; Romulo H. Romero
- Book ID
- 104214806
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- French
- Weight
- 208 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Khand cycloaddition. Several methods have been reported to increase the rate of the intramolecular Pauson-Khand cycloaddirion.2*3 These include performing the reaction in the presence of 4-methylmorpholine N-oxide4 or trimethylamine N-oxide' in CH.&l,, or carrying out the reaction in the dry state on silica geL6 In our earlier work' on *he ligand directed intermolecular Pauson-Khand reaction, we noted that the use of alkyl sulfides as
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A total synthetic route to (-)a-kainic acid has been developed based on the Pauson-Khand reaction as a key reaction for the construction of the bicycle ring system. The unique structure and novel biological activities (anthehninticl, insecticidal\* and neuroexitatory activity) of kainic acid l, iso
Rate Enhancement of the Pauson-Khand Reaction by Primary Amines. -Two new and convenient methods to promote the Pauson-Khand reaction without using oxidants are developed. -(SUGIHARA, T.;