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Examples:


Example 1



A mixture of the aldehyde (A) (12.0 g, 9.16 mol) and the iminophosphorane (B) (36.3 g, 9.61 mol) in toluene (60 mL) was refluxed for 18 h. The precipitated solid was filtered off. The filtrate was concentrated in vacuo to provide the product as a colorless gum. [13 g, crude]


[Patent Reference: WO2015129926, page 201, (21.5 MB)]