- Method for synthesizing 1,3-diiminoisoindoline by using mixed solvent
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The invention discloses a method for synthesizing 1,3-diiminoisoindoline by using a mixed solvent. By using a solvent method in a synthesis method of phthalic anhydride to synthesize the 1,3-diiminoisoindoline, the disadvantage of raw material shortage of a phthalonitrile method and defect of unstable reaction in a solid-phase melting method are overcome. The method has the advantages of simple and easily-controlled process and safe operation; in addition, the yield of the 1,3-diiminoisoindoline reaches 90 percent or above.
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Paragraph 0021-0024; 0025-0028; 0029-0032
(2018/05/01)
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- SYNTHESIS OF 1,3-DIIMINOISOINDOLINES FROM 2-CYANOBENZALDEHYDE. REACTION OF N-(2-CYANOBENZYLIDENE)ANILINES WITH ELEMENTAL SULFUR IN LIQUID AMMONIA AND AMINES
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Various 1,3-diiminoisoindolines were obtained by treating N-(2-cyanobenzylidene)anilines with elemental sulfur in liquid ammonia and amines.A novel route to isoindoline from 2-cyanobenzaldehyde was developed.
- Sato, Ryu,Nakayama, Mikiya,Yuzawa Yoshiki,Goto, Takehiko,Saito, Minoru
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p. 1887 - 1890
(2007/10/02)
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