The biaryl core structure of rhazinilam with its fixed dihedral angle is a pivotal element for its unique in vitro cytotoxic activity. Most of the related natural products are oxidized versions of rhazinilam. Replacing the sensitive pyrrole ring by a pyrrolinone ring is the basis of our initial strategy towards rhazinilamanalogues. With this goal, variants of the sequence crossed Mukaiyama aldol reaction
byproducts. Due to the inertness of the reaction byproducts, we found a one-pot transformation of the in situ generated silyl enol ethers into various α-functionalized carbonyls by reaction with Togni-II reagent or aldehydes.
Reaction of silylketene acetals with 3,3-dimethylacryloyl chloride.
作者:Gérard Rousseau、Luis Blanco
DOI:10.1016/s0040-4039(00)98989-5
日期:1985.1
The reaction of silylketene acetals with 3,3-dimethylacryloyl chloride in acetonitrile gave <,δ-ethylenic β-keto esters 3. Application to a new synthesis of (∓)-turmerone is described.
Hypervalent Iodine Oxidation of Trimethylsilyl Ketene Acetals: A Convenient Route to α-Methoxylation of Esters and Lactones
作者:Robert M. Moriarty、Neena Rani、Cristian Condeiu、Michael P. Duncan、Om Prakash #
DOI:10.1080/00397919708004187
日期:1997.9
Abstract Hypervalent iodine oxidation of trimethylsilylketeneacetals of esters and lactones using iodosobenzene in methanol affords the corresponding α-methoxylated carbonyl compounds in good yields. #On leave of absence from Kurukshetra University, Kurukshetra, 136119, India.