1,3-Dipolar cycloadditions of 1-(N-arylidene)amino-1, 2,3-triazoles with diphenylnitrilimine
✍ Scribed by Bojilova, Anka; Rodios, Nestor A.; Alexandrou, Nicholas E.
- Book ID
- 121324266
- Publisher
- Royal Society of Chemistry
- Year
- 1988
- Weight
- 577 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1472-7781
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Synthesis of a series of novel 1,3-diphenyl-4-arylspiropyrazolines[5.2 1 ]-1 1 -tetralones has been accomplished in good yield by regioselective 1,3dipolar cycloaddition of diphenylnitrilimine with (E)-2-arylidene-1-tetralones. X-ray crystal structure analysis of one of the products 4b confirms the
## Abstract Substituted 4,5‐dihydro‐3‐methylene‐2(3__H__)‐furanones 1 react as dipolarophiles with diphenylnitrilimine to give the corresponding spiro[furan‐pyrazolin]ones 2. From the compound 1a, 1,3‐diphenyl‐7‐oxa‐1,2‐diazaspiro[4,4]non‐2‐en‐6‐one (2a) is formed. In the other cases, a primarily f