3-Diazo-3H-1,2,4\_triazoles convert to singlet 3H-1,2,4-triazol-3-ylidenes which ((effect directed i?lectrophilic substitutions of benzene?-and (2) coordinate with benzenoid substituents and nitro compounds to give decomposition or rearrangement products. Aromatic substitution by carbenes is importa
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Unusual substituent and multiplicity effects in carbenic ring expansion and substitution reactions of benzenes with 3-diazo-2,5-diphenylpyrrole
โ Scribed by Nagarajan, M.; Shechter, H.
- Book ID
- 127292402
- Publisher
- American Chemical Society
- Year
- 1979
- Tongue
- English
- Weight
- 440 KB
- Volume
- 101
- Category
- Article
- ISSN
- 0002-7863
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The kinetics of the reactions of 2-chloro-3-nitropyridine (ortho-like) and 5-nitro ( para-like) isomer with morpholine and piperidine were studied in methanol and benzene at several amine concentrations and temperatures in the range 25 -45ยฐC. The data show that k 3-NO 2 /k 5-NO 2 ratios are less tha