- One-pot solid phase synthesis of (E)-nitroalkenes
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An efficient one-pot protocol for the synthesis of (E)-nitroalkenes by reaction of aldehydes and nitroalkanes in the presence of polymer-bound triphenylphosphine, iodine and imidazole is described. Although the reaction works with similar efficiency with triphenylphosphine and its polymer-bound version, easy removal of the unwanted polymer-bound triphenylphosphine oxide and its recovery as triphenylphosphine provide the edge for practical application of the method.
- Rokhum, Lalthazuala,Bez, Ghanashyam
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p. 5500 - 5504
(2013/09/23)
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- A Convenient & Short Route for the Synthesis of Ayapin & Scoparone
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A short, convenient and general route to synthesise two important intermediates in coumarin synthesis, viz. 2-hydroxy-4,5-methylenedioxybenzaldehyde (4a) and 2-hydroxy-4,5-dimethoxybenzaldehyde (4b), is described.These have been converted by Wittig reaction into the naturally occurring coumarins, ayapin (1a) and scoparone (1b), respectively.
- Kelkar, Shriniwas L.,Phadke, Chetan P.,Marina, Sister
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p. 458 - 459
(2007/10/02)
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