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A new route to the synthesis of ellipticine quinone from isatin

โœ Scribed by Ramkumar, Nagarajan; Nagarajan, Rajagopal

Book ID
121483401
Publisher
Elsevier Science
Year
2014
Tongue
French
Weight
670 KB
Volume
55
Category
Article
ISSN
0040-4039

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When N-substituted formanilides are treated briefly and sequentially with oxalyl chloride, Hiinig's base, and bromine, isatins are rapidly formed, many in good yields. The reaction involves deprotenation of the Vilsmeier reag~t, dimerisation of the carbene thus formed and eleetrophilic cyelisation o