109751-35-1Relevant academic research and scientific papers
Separation and crystal structure of two isomeric of 1,3,3-trimethyl-5- nitro-3-(4-nitrophenyl)-2,3-dihydro-1H-indene and 1,3,3-trimethyl-5-nitro-1-(4- nitrophenyl)-2,3-dihydro-1H-indene
Wang,Wu,Shao,Men,Gao
, p. 399 - 402 (2014)
The isomers, 1,3,3-trimethyl-5-nitro-3-(4-nitrophenyl)-2,3-dihydro-1H- indene (1) and 1,3,3-trimethyl-5-nitro-1-(4-nitrophenyl)-2,3-dihydro-1H-indene (2), have been prepared and separated effectively. Their crystal structures can not be confirmed by the r
Method for synthesizing indane structure-containing compound
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Paragraph 0080-0120, (2020/08/18)
The invention provides a method for synthesizing an indane structure-containing compound, which comprises the following steps: 1) in the presence of a solid acid catalyst, carrying out a nitration reaction on an indane compound of a compound as shown in a general formula (I) to obtain compounds as shown in a general formula (II) and a general formula (III); and 2) in the presence of a reducing agent, performing a reduction reaction on the compounds represented by the general formula (II) and the general formula (III) to obtain compounds represented by the general formula (IV) and the general formula (V); wherein in the general formulas (I), (II), (III), (IV) and (V), R1, R2, R3 and R4 are independently hydrogen, C1-4 alkyl, C1-4 alkoxy, halogen, hydroxyl or carboxyl.
Polyamide-imide with indan structure and preparation method of polyamide-imide
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Paragraph 0052; 0053; 0054, (2017/08/29)
The invention provides polyamide-imide with an indan structure. The polyamide-imide has a structural formula as shown in the specification, and in the formula, n is from 1 to 8. The invention further discloses a material which is prepared after the polyamide-imide with the indan structure is cured at 220-380 DEG C, and a preparation method of the polyamide-imide with the indan structure. The invention studies the synthesis and the properties of polyamide-imide, thermal-curing polyamide-imide of different polymerization degrees is prepared from 5(6)-amino-1-(4-amino phenyl)-1,3,3-trimethyl indan as monomers, then the stacking density and the interaction of molecular chains can be reduced, the flexibility of the molecular chains can be improved, and finally polyamide-imide resin which is excellent in solubleness and excellent in thermal resistance can be synthesized.
