## Abstract The intramolecular Knoevenagel condensation of __N__‐cyclohexyl 3‐aryl‐2‐(2‐nitrophenyl)acetoxy‐3‐oxopropionamides 4 obtained from 2‐nitrophenylacetic acid (1), arylglyoxals 2 and cyclohexyl isocyanide (3) afforded __N__‐cyclohexyl 3‐aryl‐2,5‐dihydro‐2‐(2‐nitrophenyl)‐5‐oxofuran‐2‐carbo
Studies on Isocyanides and Related Compounds. Synthesis of Oxazole Derivatives via the Passerini Reaction
✍ Scribed by Bossio, Ricardo ;Marcaccini, Stefano ;Pepino, Roberto
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 160 KB
- Volume
- 1991
- Category
- Article
- ISSN
- 0947-3440
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✦ Synopsis
Abstract
The reaction between arylglyoxals (1), cyclohexyl isocyanide, and aromatic carboxylic acids (2) affords N‐cyclohexyl‐2‐acyloxy‐3‐aryl‐3‐oxopropionic amides (3) which can be cyclized to N‐cyclohexyl‐2,4‐diaryl‐5‐oxazolecarboxamides (4).
📜 SIMILAR VOLUMES
## Abstract The reaction between arenesulfonylacetic acids 1, arylglyoxals 2 and isocyanides 3 affords __N__‐substituted 3‐aryl‐2‐arylsulfonylacetoxy‐3‐oxopropionamides 4, which are cyclized to __N__‐substituted 3‐aryl‐4‐arylsulfonyl‐2,5‐dihydro‐5‐oxofuran‐2‐carboxamides 6. Treatment of compounds 6
Studies on Isocyanides and Related Compounds. An Unusual Synthesis of Functionalized Succinimides. -The reaction of amides (V) affords succinimides such as (VI) instead of the expected β-lactam. A possible reaction mechanism is described.
## Abstract The Ugi four‐component condensation between 1,1‐diethoxy‐2‐isocyanoethane (2), cycloketones 1, amine hydrochlorides 4, and potassium thiocyanate (3a) or selenocyanate (3b) affords spiroimidazoles 5, which are cyclized to spiroimidazo[1,5‐__a__]imidazole‐5‐thiones (or selenones) 6.