One - Pot Synthesis of 2,3 - Disubstituted Naphtho[2,3 - b]thiophene - 4,9 - diones from a 2 - Sulfenyl - 1,4 - naphthoquinone and Enamines
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The title naphthothiophenequinone derivatives were generally synthesized in one-pot using a tandem conjugate addition–cyclization sequence between 2-[2-(ethoxycarbonyl)ethyl]thio-1,4-naphthoquinone and enamines, derived from cyclic and acyclic ketones.
- Chemistry Letters
Chemistry Letters 1999(6), 503-504, 1999-06-05
The Chemical Society of Japan