Electrophilic aromatic substitution. Part 34. Nitration of 1-chloro-4-nitro-benzene, 1,3-dichloro-2-nitrobenzene, 1,3-dinitrobenzene, 1-chloro-2,4-dinitro-benzene, and 2-chloro-1,3-dinitrobenzene in sulphuric acid and oleum
β Scribed by Melhuish, Martin W.; Moodie, Roy B.; Payne, Malcolm A.; Schofield, Kenneth
- Book ID
- 120661170
- Publisher
- Royal Society of Chemistry
- Year
- 1988
- Tongue
- English
- Weight
- 637 KB
- Volume
- 8
- Category
- Article
- ISSN
- 1472-779X
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The temperature and pressure dependences of 35 Cl nuclear quadrupole resonance (NQR) frequency and spin-lattice relaxation time (T 1 ) were investigated for 1-chloro-2,4-dinitrobenzene and 1,2-dichloro-3nitrobenzene. T 1 was measured in the temperature range 77-300 K. Furthermore, the NQR frequency
The isomerisation of 1,4-diarvl-2-azetidinones in cold concentrated sulohuric acid to qive the correspondinq 3,4-dihydro-4-arylquinolin-2(1H)-ones (e.a. la + 2a) was first reported hy Knunyants and Gambaryan' and the results were recently confirmed and extended2. We have found that the chloro-comnou
we describe a convenient and general method for the preparation of 2,3-dihydro-2-niuo-3-phenyl-4H-furo[3,2-c][l]~~opy~-4-ones from cl-hydroxycoumarin and (2-chloro-2-nitroethenyl)benzenes in the presence of potassium fluoride. Using the same starting materials and by replacing potassium fluoride wit
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