A Novel Tandem [2+ 2] Cycloaddition-Dieckmann Condensation: Facile One-Pot Process To Obtain 2, 3-Disubstituted-2-cycloalkenones from Ynolates
M Shindo, Y Sato, K Shishido
Index: Shindo, Mitsuru; Sato, Yusuke; Shishido, Kozo Journal of the American Chemical Society, 1999 , vol. 121, # 27 p. 6507 - 6508
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Citation Number: 38
Abstract
Ynolate anions (1) are ketene anion equivalents, and their chemistry is very attractive. 1 Recently, we have developed a novel and useful method for the generation of lithium ynolates via the cleavage of ester dianions prepared from readily available R, R-dibromo esters (2)(Scheme 1) 2 and have demonstrated new reactions using ynolates. 3 It has been known that the [2+ 2] cycloaddition4 of ynolates with aldehydes affords highly reactive ...
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