## Abstract The reaction of methyl anthranilate with 4,5βdichloroβ1,2,3βdithiazolium chloride (Appel's salt) in the presence of pyridine (2 equivalents) in dichloromethane at room temperature gave methyl __N__β(4βchloroβ5__H__β1,2,3βdithiazolβ5βylidene)anthranilate (3a) (50% yield), which reacted w
Copper-Catalyzed Cyclopropanation of 1,2,3,4-Tetrahydropyridin-2-ones with Trimethylsilyldiazomethane: A Facile and Selective Synthesis of 2-Aza-3-oxobicyclo[4.1.0]heptanes.
β Scribed by Vishal B. Sharma; Suman L. Jain; Bir Sain
- Publisher
- John Wiley and Sons
- Year
- 2006
- Weight
- 16 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0931-7597
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π SIMILAR VOLUMES
Depending on the reaction conditions eithcr 2.6-disubstitutcd 2,3,5,6-tetrahydro-4H-1,3-thiazin-4-ones 4 or 1,6-disubstitutcd 2-thiouracils 5 are readily prepared by base-catalyzcd cyclization of N-propenoylthioureas 3. Compounds 5 could also bc obtained by Dimroth-type rearrangement of 1,3-thiazin-
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