中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-氯-8-乙基喹啉-3-甲腈 | 2-chloro-3-cyano-8-ethylquinoline | 880105-72-6 | C12H9ClN2 | 216.67 |
2-氯-8-乙基喹啉-3-甲醇 | (2-Chloro-8-ethylquinolin-3-yl)methanol | 1017429-39-8 | C12H12ClNO | 221.686 |
8-乙基-2-氧代-1,2-二氢-3-喹啉甲醛 | 8-Ethyl-2-hydroxyquinoline-3-carbaldehyde | 436088-08-3 | C12H11NO2 | 201.225 |
—— | (Z)-5-((2-chloro-8-ethylquinolin-3-yl)methylene)-2-thioxothiazolidin-4-one | 1620844-51-0 | C15H11ClN2OS2 | 334.85 |
—— | 8-ethyl-2-(piperidin-1-yl)quinoline-3-carbaldehyde | 938139-34-5 | C17H20N2O | 268.359 |
A green, mild and efficient method for Knoevenagel condensation of 3-formylchromone/2-chlroquinoline-3-carbaldehyde with active methylene compounds such as Meldrum’s acid/ethyl cyanoacetate using biosupported cellulose sulphuric acid (CSA) in the solid-state by grinding under solvent-free condition has been developed. This method provides several advantages including environmental friendliness, shor t reaction times, high yields and a simple work-up procedure. Moreover, the CSA was successfully reused for four cycles without significant loss of activity.