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Effect of water concentration on the reaction rate in the absence of NEt3.
| H2O (conc. %) |
Cata (mol%) | %Conversion(0.25 h) |
|---|---|---|
| 0 | 10 | 35b |
| 2.5 | 10 | 35 |
| 5 | 10 | 37 |
| 10 | 10 | 39 |
| 20 | 10 | 62 |
| 2.5 | 200 | 81 |
Pyrrolidine.
Product 3a crystallized in the reaction medium in all cases except the last entry at the 0.5 h and the reactions were completed when checked at 4.5 h by 1H NMR.
