## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
Investigation of Naphthyridines. Part 16. Synthesis of Derivatives of 2,5-Dioxo-1,2,5,6,7,8-hexahydro-1,6-naphthyridine-3-carboxylic Acids from Anilides (Hydrazides) of 6-Oxo-2-styrylnicotinic Acids.
β Scribed by A. B. Deyanov; M. E. Konshin; Z. N. Semenova
- Publisher
- John Wiley and Sons
- Year
- 2005
- Weight
- 21 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0931-7597
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## Abstract The separation of a stereoisomeric mixture of esters 6, and the synthesis of the new enantiomerically pure unsaturated 6,5βfused bicyclic lactam 2 are described. The keyβstep involves trimethylsilyl iodide cleavage, without racemization, of a vinylogous carbamate. The __cis Nβ__ acetyla
I211 Genbve 4 (5. V .86) ~ Comparative results on the reduction of 4,6,7,8-tetrahydro-7,7-dimethyl-2H-1 -benzopyran-2,5(3H)-diones 1 are reported. Hydride reduction (LiAIH, in EtzO or NaBH, in i-PrOH) affords 2,3,4,6,7,8-hexahydro-5H-l-benzopyran-5-ones 5 in 30-60 % isolated yield. Photochemical red