received in UK for plblicrtian 4 Maroh 1974) Addition of tert-butyl trimethylsilylacetatel to tetrahydrofuran (THF) solutions of lithium diisopropylamide at -78' produces the lithimn ester enolate, I, (eq 1) as a white precipitate. Attempts to isolate I have been unsuccessful; however, suspensions o
The preparation and reactions of lithio tert-butylbis(trimethylsilyl) acetate. A synthesis of α-silylated vinyl esters.
✍ Scribed by Stephen L. Hartzell; Michael W. Rathke
- Book ID
- 104226113
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- French
- Weight
- 158 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
Lithio tert-butyl bis(trimethylsilyl)acetate, I, obtained by reaction of the corresponding ester, II, with lithium diisopropylamide (es l), reacts with aldehydes to give good yields of a-silylated vinyl esters (eq 2). As suggested previously for the mono-silyl analogue
📜 SIMILAR VOLUMES
The hydroalumination of butylseleno acetylenes with DIBAL-H followed by addition of n-butyllithium generated in situ the (Z)butylseleno vinyl alanates intermediates which were captured with C 4 H 9 TeBr furnishing the (E)-telluro(seleno)ketene acetals exclusively. The isomers with opposite stereoche