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嘉应学院化学与环境学院,广东 梅州 514015
Received:27 November 2018,
Revised:2018-12-11,
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曾育才, 刘小玲, 梁奇峰, 吕鉴泉. 微波促进碳酸钾催化一锅法合成2-氨基-3氰基-4-芳基-4H-苯并色烯衍生物[J]. 化工学报, 2019, 70(S1): 110-114
ZENG Yucai, LIU Xiaoling, LIANG Qifeng, LYU Jianquan. One-pot synthesis of 2-amino-4-aryl-3-cyano-4H-benzochromene derivatives catalyzed by K2CO3 under microwave irradiation[J]. CIESC Journal, 2019, 70(S1): 110-114 DOI: 10.11949/j.issn.0438-1157.20181418.
曾育才, 刘小玲, 梁奇峰, 吕鉴泉. 微波促进碳酸钾催化一锅法合成2-氨基-3氰基-4-芳基-4H-苯并色烯衍生物[J]. 化工学报, 2019, 70(S1): 110-114 DOI: 10.11949/j.issn.0438-1157.20181418.
ZENG Yucai, LIU Xiaoling, LIANG Qifeng, LYU Jianquan. One-pot synthesis of 2-amino-4-aryl-3-cyano-4H-benzochromene derivatives catalyzed by K2CO3 under microwave irradiation[J]. CIESC Journal, 2019, 70(S1): 110-114 DOI: 10.11949/j.issn.0438-1157.20181418. DOI:
微波辐射下,乙醇溶剂中K
2
CO
3
催化芳甲醛、丙二腈和
α
-萘酚(或
β
-萘酚)三组分一锅法快速合成了一系列2-氨基-3-氰基-4-芳基-4H-苯并[h]色烯或苯并[f]
色烯衍生物。以苯甲醛、丙二氰与
α
-萘酚的反应为模板反应,通过单因素实验方案优化了反应的工艺条件。结果表明:反应物各10 mmol,催化剂K
2
CO
3
1 mmol,溶剂无水乙醇15 ml,采用微波功率500 W,80℃回流反应 5 min,2-氨基-3-氰基-4-苯基-4H-苯并[h]色烯(
4a
)的收率83.6%。在上述最佳条件下,利用取代苯甲醛代替苯甲醛,4H-苯并[h]色烯衍生物(
4
)产率为65.8%~89.4%。 利用
β
-萘酚代替
α
-萘酚,4H-苯并[f]色烯衍生物(
6
)产率为67.5%~82.9%,合成产物通过熔点和红外光谱表征其结构。
A series of 2-amino-4-aryl-3-cyano-4H-benzo[h]chromene or benzo[h]
chromene derivatives were synthesized by a three-component one-pot reaction of aromatic aldehydes
malononitrile and
α
-naphthol(or
β
-naphthol) with K
2
CO
3
as catalyst in anhydrous ethanol solvent under microwave irradiation. With benzaldehyde
malononitrile and
α
-naphthol as template reaction
the reaction conditions were optimized by single factor experiments. The results showed that 2-amino-4-aryl-3-cyano-4H-benzo[h]chromene(
4a
) was obtained 83.6% yield with the condition of each reactant 10 mmol
K
2
CO
3
1 mmol and anhydrous ethanol 15 ml as solvent
using microwave power 500 W
reflux reaction 5 min at 80℃. Under the best of the above conditions,using substituted benzaldehyde to replace benzaldehyde
4H-benzo[h]chromene derivatives(
4
) were obtained 65.8%~89.4% yield. Using
β
-naphthol to replace
α
-naphthol
4H-benzo[f]chromene derivatives(
6
) were obtained 67.5%~82.9% yield. The structures of these compound were characterized by m.p. and IR.
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