Material contg. thiophene spirane structure, its synthesis and application
A thiophene spiro, meaning technology, applied in the field of thiophene spiro ring materials and their preparation, can solve the problems of no articles and patent reports, etc.
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Embodiment 1
[0110] Embodiment 1, preparation of dithiophene spiro compound material by Friedel-Craft ring closure reaction:
[0111] Spiro[pentacyclo[1,2-b:4,3-b′]dithiophene-7,9′-fluorene]
[0112] spiro[cyclopenta[1,2-b:4,3-b′]dithiophene-7,9′-fluorene]
[0113] 2-bromo-3,3-dithiophene
[0114] Take 2.075g (12.5mmol) of 3,3-dithiophene and dissolve it in DMF (17.42ml), and dissolve 2.046g (11.5mmol) of NBS in DMF (21.78ml), and add dropwise under ice water to mix the reaction. Stir at room temperature for 24 hours, dilute with ice water, extract with ether, dry and rotary evaporate, and purify with petroleum ether silica gel column to obtain 2.53 g of light yellow liquid 2-bromo-3,3-dithiophene (82.9% yield).
[0115] GC-MS (EI-m / z): 244 / 246 (M + ); 1 H NMR (400MHz, CDCl 3 , ppm): δ7.084-7.098 (d, J=5.6Hz, 1H), 7.277-7.291 (d, J=5.6Hz, 1H), 7.377-7.396 (dd, J=4.8Hz, J=2.8Hz, 1H), 7.431-7.447(dd, J=4.8Hz, J=1.2Hz, 1H), 7.635-7.645(dd, J=2.8Hz, J=1.2Hz, 1H).
[0116] Spiro[pentacyclo...
Embodiment 2
[0125] Example 2. Preparation of monothiophene spiro compound materials by Friedel-Craft ring closure reaction:
[0126] Spiro[indene[2,1-b]dithiophene-8,9′-fluorene]
[0127] spiro[indeno[2,1-b]thiophene-8,9′-fluorene]
[0128] 2-Bromo-3-phenylthiophene
[0129] Take 3-phenylthiophene (2g, 12.5mmol) and dissolve it in DMF (17.42ml), and dissolve NBS (2.046g, 11.5mmol) in DMF (21.78ml), add it dropwise under ice water and mix the reaction. Stir at room temperature for 24 hours, dilute with ice water, extract with ether, dry and rotary evaporate, and purify with petroleum ether silica gel column to obtain 2.20 g of light yellow liquid 2-bromo-3-phenylthiophene (80% yield).
[0130] GC-MS (EI-m / z): 238 / 240 (M + ); 1 H NMR (400MHz, CDCl 3 , ppm): δ7.064-7.081 (d, J = 5.6Hz, 1H), 7.317-7.335 (d, J = 5.2Hz, 1H), 7.385-7.428 (m, 1H), 7.463-7.502 (t, J =8.0Hz, 2H), 7.595-7.619(d, 3 J=8.0Hz, 2H). 13 C NMR (CDCl 3 , ppm): 108.922, 126.205, 127.966, 128.697, 128.964, 129.444, 1...
Embodiment 3
[0140] Embodiment 3, prepare thiophene spiro compound material by Suzuki coupling reaction:
[0141] 2′,7′-Diphenylspiro[pentane[1,2-b:4,3-b′]dithiophene-7,9′-fluorene]
[0142] 2′,7′-diphenylspiro[cyclopenta[1,2-b:4,3-b′]dithiophene-7,9′-fluorene]
[0143] 2′,7′-Dibromospiro[pentane[1,2-b:4,3-b′]dithiophene-7,9′-fluorene]
[0144] 2′,7′-dibromospiro[7H-cyclopenta[1,2-b:4,3-b′]dithiophene-7,9′-[9H]fluorene]
[0145] Get 2-bromo-3,3-dithiophene 1g (4.2mmol) and magnesium Mg 0.1004g (4.2mmol) reaction generates Grignard reagent, and 2,7-dibromofluorene copper 1.414g (4.2mmol) in 16mL tetrahydrofuran React at 60°C for 12 hours, a large amount of white precipitate is formed, and finally add saturated NHCl 4 Convert Grignard salts to alcohols. Ether extraction, drying and rotary evaporation, petroleum ether: dichloromethane mixed solvent (3:2) silica gel column purification, to obtain a slightly pale yellow white solid 2,7-dibromo-9-(2-(3-(3- Thienyl) thienyl))-fluorene-9-alco...
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