Chin. J. Org. Chem. ›› 2001, Vol. 21 ›› Issue (10): 742-745. Previous Articles     Next Articles

微波辐射一步法合成吡喃和吡喃[2, 3-c]吡唑衍生物

周建峰;屠树江;高原;嵇明   

  1. 淮阴师范学院化学系;徐州师范大学化学系.徐州(221009);深圳大学师范学院 化生系.
  • 发布日期:2001-10-25

One pot synthesis of pyrans and pyrano[2, 3-c] pyrazole derivatives under microwave irradiation

Zhou Jianfeng;Tu Shujiang;Gao Yuan;Ji Ming   

  1. Xuzhou Teachers Coll, Dept Chem.Xuzhou(221009);Shenzhen.
  • Published:2001-10-25

2-Amino-3-cycano-4-aryl-7, 7-dimethyl-5, 6, 7, 8- tetrehydrobenzo[b] pyrans and 6-amino-5-cyano-4-aryl- 1, 4-dihydropyrano[2, 3-c]pyrazoles were synthesized by one-step reaction of aromatic aldehydes, malononitrile and dimedone or 3-methyl-1-phenyl-2-pyrazolin-5-one usig piperidine as catalyst under microwave irradiation. The reactions were completed in 2~12 min in good yields.

Key words: MICROWAVE RADIATION, PYRANE P, CYCLOHEXANEDIONE, PYRAZOLINE P, PROPANEDINITRILE, PIPERIDINE, PYRAZOLE P, BENZOPYRAN P, ONE-STEP PROCESS

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