Abstract
Reaction of nitrosalicylaldehydes (1) with carbethoxymethylenetri-phenylphosphorane in Et2NPh, in Ph2O, and in the absence of solvent (neat) at 210-215 °C was investigated. Reaction of 3-nitrosalicylaldehyde (1d) in Et2NPh afforded the benzoxazole (6) and the aminocoumarin (3e) along with the expected coumarin (3d). It was clarified that the origin of carbon-unit introduced for the formation of the benzoxazole ring came from the alkyl group of solvent.
Original language | English |
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Pages (from-to) | 2729-2738 |
Number of pages | 10 |
Journal | Heterocycles |
Volume | 38 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 1 1994 |
ASJC Scopus subject areas
- Analytical Chemistry
- Pharmacology
- Organic Chemistry