Trifluoroacetimidoyl lithium; generation and reaction with electrophiles
β Scribed by Hisayuki Watanabe; Fumio Yamashita; Kenji Uneyama
- Book ID
- 104224999
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- French
- Weight
- 267 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Generation and nucleophilic reactions of a-trifluoromethyl carbanion would he a promising entry to the syntheses of trifluoromethylated compounds of which unique proper&s play an important role in medicinal and agricultural chemistries and material sciences.l)s 2) However, rapid elimination of fluoride anion from a-trifluoromethylated sp3 carbanion makes its nucleophilic carbon-carbon bond formation rather difficult.3)* 4) Whereas, a-trifluoromethylated ~$2 carbanions such as trifluoropropenyl carbanion (la)
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## 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 βFull Textβ option. The original article is trackable v
The enolates of see-thioamides j3, which are generated by three different methods (scheme II and equation l), are alkylated selectively at the c-carbon to the thiocarbonyl group. The unusual i3 '-lithiation to provide an intermediate $i is observed for N-methyl-a,B-dimetylthioacrylamide and N-methyl