A Useful Modification of the Evans Auxiliary: 4-Isopropyl-5,5-diphenyloxazolidin-2-one
โ Scribed by Tobias Hintermann; Dieter Seebach
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- German
- Weight
- 529 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract Multigram amounts of suitably protected __ฮฒ__^2^โamino acids with 17 of the 20 proteinogenic side chains are prepared by diastereoselective reactions of Li, B, or Ti enolates of the corresponding 3โacylโ4โisopropylโ5,5โdiphenyloxazolidinโ2โones (acylโDIOZ; **1**) with appropriate electr
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a โFull Textโ option. The original article is trackable v
N-Allyl, N-cinnamyl, and N-(3-trimethylsilyl)propargyl derivatives of 4-isopropyl-5,5-diphenyloxazolidin-2-one (DIOZ) are prepared by lithiation of the parent DIOZ (with BuLi in THF) and reaction with the corresponding bromides (Scheme 1). Lithiation in the same solvent, with deprotonation by BuLi o