Electrosynthesis of nano-sized pyran and chromene derivatives by one-pot reaction between cyclic-1,3-diketons, malononitrile/ethyl cyanoacetate, and isatins
Abstract
Abstract
An efficient and sustainable method was developed for the electrocatalytic synthesis of nano-sized 4
H
-pyran derivatives via a green, one-pot, three-component condensations of cyclic-1,3-diketones [including 1H-indene-1,3(2H)-dione, cyclohexane-1,3-dione, cyclopentane-1,3-dione, pyrimidine-2,4,6(1H,3H,5H)-trione], malononitrile or ethyl cyanoacetate, and isatins in an undivided electrochemically cell applying potassium bromide as the electrolyte in the alcoholic media. This electrosynthesis was introduced as a reliable and cost-effective approach for the high-yielding synthesis (76–92%) of the target compounds. The synthesized 4
H
-pyran and chromene nanoparticles could open an effective way for production of nano-sized drugs.
Graphical abstract
Keywords
- Electrocatalytic three-component synthesis,
- Nanoparticle,
- Cyclic-1,
- 3-diketones,
- 1H-indene-1,3(2H)-dione,
- Cyclohexane-1,3-dione,
- Cyclopentane-1,3-dione,
- Pyrimidine-2,4,6(1H,3H,5H)-trione,
- Malononitrile,
- Ethyl cyanoacetate,
- Isatins,
- 4H-:pyran
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