Thermal treatment of p-allenic esters (2) with alumina catalyst in aprotic solvents yielded (2E,&Z)-dienoic esters (3) in 57-87s yields with 91-100% stereoselectivity. p-Allenic esters 2, which are readily obtained from trialkyl orthoacetate and propargylic alcohols (I.)', can be converted to 2,4-di
Selective Synthesis of (2Z,4E)-Dienyl Esters by Ene—Diene Cross Metathesis.
✍ Scribed by Gustavo Moura-Letts; Dennis P. Curran
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 35 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Hydrozirconation and hydrostannation, together with Pdo catalysed coupling, are used to make (2E,4Z,6E)-, (2E,4E,6E)-and (2E,4E,GZ)-tetraenol stems as synthetic intermediates for synthesis of the AK-II, AF-llc, AF -Ila host-selective plant toxins.
Furan-2-acetic esters are obtained in good yields by direct oxidative cyclization-alkox~.'carbonylation of (Z)-2-en-4-yn-l-ols. bearing both an alkyl or an aD'l substituent a to the hydrox3' group, in the presence of catalytic amounts of palladium iodide in conjunction with potassium iodide at 50-70