Ar = p-tolyl or phenyl), have been C-acylated by acetic anhydride to obtain new types of phosphorus ylides. Synthesis and characterization of six phosphorus ylides of the type Ar 3 PC(COCH 3 )(COR) are reported. The reaction of {(p-tolyl) and {Ph 3 PCHCOOCH 2 C 6 H 5 } (VI) with acetic anhydride in
Synthesis, Spectroscopic Studies and X-ray Crystal Structures of New Pyrazoline and Pyrazole Derivatives
✍ Scribed by Gerimário F. de Sousa; Claudia C. Gatto; Inês S. Resck; Victor M. Deflon
- Book ID
- 106404677
- Publisher
- Springer
- Year
- 2010
- Tongue
- English
- Weight
- 332 KB
- Volume
- 41
- Category
- Article
- ISSN
- 1572-8854
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## Abstract The ^1^H and ^13^C NMR resonances of 22 1‐alkyl‐pyrazole and 25 1‐alkyl‐pyrazoline derivatives were assigned completely using the concerted application of one‐ and two‐dimensional experiments (DEPT, gs‐HMQC and gs‐HMBC). Nuclear Overhauser enhancement (NOE) effects, conformational analy