Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| entry | catalyst | time (h) | yieldb (%) |
|---|---|---|---|
| 1 | no catalyst | 15 | 41 |
| 2 | p-TSA (20 mol %) | 24 | 57 |
| 3 | H2SO4 (20 mol %) | 24 | 62 |
| 4 | CH3COOH (20 mol %) | 24 | 53 |
| 5 | [CMMIM][BF4–] (2 mol %) | 12 | 65 |
| 6 | [CMMIM][BF4–] (5 mol %) | 2.5 | 93 |
| 7 | [CMMIM][BF4–] (7.5 mol %) | 2.5 | 93 |
| 8 | [CMMIM][BF4–] (10 mol %) | 2.5 | 93 |
| 9 | [CMMIM][BF4–] (15 mol %) | 2.0 | 93 |
One-pot reaction between 5 (1 equiv), 6a (1equiv), and 7 (1 equiv) at rt in aq. EtOH(1:1).
Yield of the isolated product.
