Pentadienone compound containing quinazolinone aryloxy as well as preparation method and application thereof
A technology containing quinazolinone aryloxy group and oxazolinone aryloxy group, which is applied in the field of pentadienone derivatives and their preparation, and can solve the problem of unsynthesized pentadienone derivatives and anti-plant Viruses and other issues
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Embodiment 1
[0065] Example 1, (1E,4E)-3-((2-(3-oxo-5-phenyl-1,4-pentadien-1-yl)phenoxy)methyl)quinazoline- 4-(3 H )-Kone (A1) Synthesis
[0066] (1) quinazoline-4-(3 H )-ketone synthesis
[0067] Add 27.5 g (0.2 mol) of anthranilic acid and 36.1 g (0.8 mol) of formamide into a 250 mL three-necked flask equipped with a thermometer and a condenser tube to keep the temperature at 135-150 ° C. During this process, the system changes from light gray to The turbid liquid turned into a yellowish-brown clear liquid, and the reaction was tracked by TLC. The reaction was complete in about 5 hours. After cooling down to 100°C naturally, 100 mL of water was slowly added to the system to decompose excess formamide, and a light gray solid was precipitated at the same time. After natural cooling, it was transferred to a large beaker, and a large amount of water was added to still precipitate off-white solids. Suction filtration and drying gave 28.88 g of the product. Recrystallization with absolu...
Embodiment 2
[0078] Embodiment 2, the synthesis of compound (A2)
[0079] Steps (1)-(4) are the same as the steps (1)-(4) of Embodiment 1;
[0080] The difference between step (5) and step (5) of Example 1 is: add 0.78 g (5.56 mmol) p-chlorobenzaldehyde instead of 0.58 g (5.5 mmol) benzaldehyde, and react for 10 hours to obtain 1.23 g yellow solid, melting point ° C, yield Rate 86.5%;
[0081] The difference between step (6) and Example 1 step (6) is: add 0.37 g (1.31mmol) 1-(4-chlorophenyl)-5-(2-hydroxyphenyl)-1,4-pentadiene -3-one, instead of 0.33 g (1.31 mmol) 1-(2-hydroxyphenyl)-1,4-pentadien-3-one, reacted for 8 hours, recrystallized to obtain 0.23 g white solid, melting point 195-197°C , yield 39.6%.
Embodiment 3
[0082] Embodiment 3, the synthesis of compound (A3)
[0083] Step (1)-(4) is the same as embodiment 1 (1)-(4);
[0084] Step (5) is the same as embodiment 1 (5) method and condition. The difference is that 0.68 g (5.49 mmol) of 1-(2-fluorophenyl)-5-(2-hydroxyphenyl)-1,4-pentadien-3-one was added and reacted for 10 hours to obtain 1.10 g of a yellow solid, Yield 82.1%.
[0085] Step (6) is the same as embodiment 1 (6) method and condition. The difference is that 0.35 g (1.31 mmol) 1-(2-fluorophenyl)-5-(2-hydroxyphenyl)-1,4-pentadien-3-one was added, reacted for 5 hours, and recrystallized to obtain 0.25 g yellow Solid, melting point 142-144°C, yield 44.7%.
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