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3H-Indol-3-ols by a novel ring contraction

✍ Scribed by Daniel Lednicer; D. Edward Emmert

Book ID
112122165
Publisher
Journal of Heterocyclic Chemistry
Year
1970
Tongue
English
Weight
439 KB
Volume
7
Category
Article
ISSN
0022-152X

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πŸ“œ SIMILAR VOLUMES

Synthesis of novel 5H, 11H-pyrido[2β€²,3β€²:
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## Abstract The synthesis of the title compounds 5__H__, 11__H__‐pyrido[2β€²,3β€²:2,3]thiopyrano[4,3‐__b__]indoles was accomplished by the Fischer indole cyclization of some 2,3‐dihydrothiopyrano[2,3‐__b__]pyridin‐4(4__H__)‐one phenylhydrazones and 7‐methyl‐2,3‐dihydrothiopyrano[2,3‐__b__]pyridin‐4(4__

N-phenylpyrazoles and 3H-indoles from al
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Michael addition of hydrazine [R=Hl to allenic nitriles followed by nucleophilic ring closure by attack of the second amine group on the carbon of the nitrile has recently been shown to give quantitative yields of 5-substituted 3-aminopyrazoles [III, [R=HI.' [II ij,-~ (III RZ lH RI / R2/KC\_ NH ,Lu"