Table 2 Synthesis of bisindolylmethane 3a in DESs using electrochemical conditions
From: Green electrosynthesis of bis(indolyl)methane derivatives in deep eutectic solvents
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Entry | DES | Time (mins) | Current (mA) | Cathode | Anode | Yield |
1 | Ethylene glycol/choline chloride (2:1) | 15 | 30 | Graphite | Graphite | 31% |
2 | Ethylene glycol/choline chloride (2:1) | 30 | 30 | Graphite | Graphite | 53% |
3 | Ethylene glycol/choline chloride (2:1) | 45 | 30 | Graphite | Graphite | 62% |
4 | Ethylene glycol/choline chloride (2:1) | 60 | 30 | Graphite | Graphite | 62% |
5 | Ethylene glycol/choline chloride (2:1) | 90 | 30 | Graphite | Graphite | 62% |
6 | Glycerol/choline chloride (2:1) | 45 | 30 | Graphite | Graphite | 63% |
7 | Propylene glycol/choline chloride (2:1) | 45 | 30 | Graphite | Graphite | NR |
8 | Urea/choline chloride (2:1) | 45 | 30 | Graphite | Graphite | NR |
9 | Ethylene glycol/choline chloride (2:1) | 60 | 10 | Graphite | Graphite | N.R |
10 | Ethylene glycol/choline chloride (2:1) | 180 | 10 | Graphite | Graphite | 53% |
11 | Ethylene glycol/choline chloride (2:1) | 45 | 30 | Platinum | Graphite | 40% |
12 | Ethylene glycol/choline chloride (2:1) | 45 | 30 | Graphite | Platinum | 71% |
13 | Ethylene glycol/choline chloride (2:1) | 45 | 30 | Copper | Graphite | 59% |
