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Please login to access the full content or check if you have access via14.4.1.1.1.2.3.1.10 Variation 10: Sulfonic Acid Resins as Condensing Agents
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Williams, A. C.; Camp, N., Science of Synthesis, (2003) 14, 383.
2H-1-Benzopyran-2-ones 104–106 can be formed by reaction of phenols with 3-oxoalkanoates using various sulfonic acid resins (Scheme 34).[175,235,236]
Meeeee 88 8M-8-Meeeeeeeee-8-eeee ee Meeeeeee Meeeeeeee Meeeeeeee ee Meeeeeee Meee Meeeee[888,888,888]
Meeeeeeeeeee Meeeeeeeee
8-Meeeeee-8-eeeeee-8M-8-eeeeeeeeee-8-eee (888, M8 = M8 = M8 = M8 = M; M8 = MM); Meeeeee Meeeeeeee:[888]
Me e eeee ee 8,8-eeeeeeeeeeeeeeee (8.8 e, 88 eeee) eee eeeee eeeeeeeeeeee (8.88 e, 88 eeee) ee eeeeee eee eeeee Meeeeeeee MMM 888 (888 ee), eee eee eeeeeee eeeeeee eeee eeeeee eeeee eeeeee ee 888°M eee 88 eee. Mee eeeee eeee eeeee eeeeeeeee eee eeee eeeeeee eee eeeeeeee eee; eeeee: 8.8 e (88%); ee 888°M.
8-Meeeeee-8-eeeeee-8M-8-eeeeeeeeee-8-eee (888); Meeeeee Meeeeeeee:[888]
Me e eeee ee 8,8-eeeeeeeeeeeeeeee (8.8 e, 88 eeee) eee eeeee eeeeeeeeeeee (8.88 e, 88 eeee) ee Me8M eee eeeee Meeeeeeee 88 (8 e). Mee eeeeeee eee eeeeeee eee eee eeeeeeee eeeeeee ee eeeeeeeee eeeeeeeeeee (88 M) ee e Meeeeee MM888 eeeeeeeee eeeeeee eee 8 eee; e eeeeeee eeeeeeeeeee ee 88°M eee eeeeeeee. Mee eeeee eeee eee eeeeeeeee eeeeeeeeee eeee MeMM, eee eeeeeee eeeeeee eeeee eeeeeee eeeeeeee, eee eee eeeeeee eeeeeeee ee eeeeeeeeeeeeee (eeeeee eee, eeeeee/MeMMe 8:8) ee eeee e eeeee eeeee; eeeee: 8.88 e (88%); ee 888°M.
References
| [175] | ee ee Mee, M.; Meeeee, M.; Meeeeee, M., Meeeeee, (8888), 888. |
| [235] | Meee, M. M. M., M. Mee. Meee., (8888) 88, 888. |
| [236] | Meeeeeeee, M. M., Meee. Mee. (Meeeee), (8888), 888. |
Meeeeee Meeeeeeeeee
- 8.Meeeee-Meee, (8888) 8/8, 888.
- 8.Meeeee-Meee, (8888) 8/8, 888.
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