作者:Jerald K. RASMUSSEN
DOI:10.1055/s-1977-24284
日期:——
Recent developments in the preparation and reactions of silyl enol ethers derived from aldehydes, ketones, and carboxylic acids and esters are discussed. These versatile compounds provide tremendous potential as synthetic enol equivalents. 1. Synthesis of Silyl Enol Ethers 1.1. Preparation from Enolates 1.2. Preparation from Hydrosilanes 1.3. Preparation from Other Silylating Agents 1.4. Preparation by Thermal Rearrangements 2. Synthesis of Ketene Silyl Acetals 2.1. Preparation from α-Anions and Dianions 2.2. Preparation by Hydrosilylation 3. Reactions of Silylated Enols 3.1. Preparation of Directed Enolates 3.2. Addition of Halides to the Double Bond 3.3. Reactions with Hydrogen Halides 3.4. Cycloaddition Reactions 3.5. Oxidation of Silyl Enol Ethers 3.6. Titanium(IV) Chloride Promoted Reactions 3.7. Thermal Rearrangements of Ketene Silyl Acetals 4. Conclusion
近期在醛、酮、羧酸及其酯衍生的硅醚烯醇化合物的制备及反应方面的进展被讨论。这些多用途化合物作为合成烯醇等价物的潜力巨大。1. 硅醚烯醇的合成 1.1. 来自烯醇盐的制备 1.2. 来自氢硅烷的制备 1.3. 来自其他硅化剂的制备 1.4. 通过热重排的制备 2. 烯酮硅缩醛的合成 2.1. 来自α-阴离子和二阴离子的制备 2.2. 通过氢硅化的制备 3. 硅化烯醇的反应 3.1. 定向烯醇盐的制备 3.2. 卤素对双键的加成 3.3. 与氢卤酸的反应 3.4. 环加成反应 3.5. 硅醚烯醇的氧化 3.6. 钛(IV)氯化物促进的反应 3.7. 烯酮硅缩醛的热重排 4. 结论