41663-84-7Relevant articles and documents
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Williams,Donahue
, p. 1608 (1978)
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NITRATION
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Page/Page column 36; 37; 49; 39; 54, (2020/05/28)
The present invention relates to a process for preparing a nitrated compound, comprising the step of reacting a compound (A) comprising at least one substituted or unsubstituted aromatic or heteroaromatic ring, wherein said heteroaromatic ring comprises at least one heteroatom selected from the group consisting of oxygen, sulfur, phosphor, selenium and nitrogen, with a compound of formula (I) wherein Y is selected from the group consisting of hydrogen and nitro.
A process for preparing N - alkyl -4 - nitro phthalimide method (by machine translation)
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Paragraph 0046; 0047; 0048; 0055; 0056; 0057; 0061-0063, (2019/02/19)
The invention belongs to the field of organic synthesis technology, and relates to a N - alkyl phthalimide as raw materials, nitric acid as nitrating agent, through the continuous flow at low temperature the nitration reaction preparation N - alkyl - 4 - nitro phthalic acid imide series products. The reaction time is short, the production cycle is short, intermittent reaction kettle solves the problem caused by the accumulation of the raw materials, the reaction process is more stable, significantly improves the reaction efficiency. The different structure of the micro-channel in the reactor to enhance the mass transfer, heat transfer performance, keep the reaction temperature constant, to avoid the phenomenon of the rack frame, to reduce by-product, at the same time improves the safety of the reaction process. The micro-channel of the mass transfer effect of strong in the reactor, so that the liquid - liquid reaction liquid to be fully mixed, in the reaction process, concentrated sulfuric acid, can greatly reduce the consumption of nitric acid, reduces the production of waste. (by machine translation)