In this paper the regiospecific transformations of methyl 2-(benzyloxycarbonyl)amino-3-dimethylaminopropenoate (1) with hydrazine, alkyl-, aryl-and heteroaryl-substituted hydrazines via the corresponding hydrazones 12-16 into pyrazoles 17-25 are described. Heteroaryl-substitued hydrazones 13-16 affo
✦ LIBER ✦
The Synthesis of 3-Functionalized 5-chloro-6-methyl-2H-1,4-oxazin-2-ones and of pyridines from cycloaddition-elimination reactions with substituted acetylenic compounds.
✍ Scribed by Koen J. Van Aken; Gerrit M. Lux; Geert G. Deroover; Lieven Meerpoel; Georges J. Hoornaert
- Book ID
- 108372449
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- French
- Weight
- 987 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4020
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## Abstract magnified image A series of 2‐substituted‐4‐(2‐nitrobenzylidene)‐4,5‐dihydrooxazol‐5‐ones (**2a‐2i**) was prepared by the Erlenmeyer's synthesis of 2‐nitrobenzaldehyde with acylglycines (**1a‐1i**) and the series of corresponding aminoderivatives (**3b‐3d** and **3g‐3i**) was synthetis