Diels-Alder reaction of 2-(E-2-nitroethenyl)-1H-pyrrole (2a) with 1,4-benzoquinone gave the desired benzo[e]indole-6, 9(3H)-dione (4a) in 10% yield versus a 26% yield (lit. 86% [5]) of the known N-methyl compound (4b) from the N-(or 1)-methyl compound (2b). Protection of the nitrogen of 2a with a ph
✦ LIBER ✦
Diels—Alder Reactions of 2-(2-Nitroethenyl)-1H-pyrroles and Their Oxygen and Sulfur Analogues with Quinones.
✍ Scribed by Wayland E. Noland; Gianluca Pardi
- Publisher
- John Wiley and Sons
- Year
- 2006
- Weight
- 15 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0931-7597
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