Provided is a composition for removing iron sulfide, containing, as an active ingredient, an α,β-unsaturated aldehyde represented by the following general formula (1):
wherein R1 to R3 each independently represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or an aryl group having 6 to 12 carbon atoms, provided that R1 may be connected to R2 or R3, to constitute an alkylene group having 2 to 6 carbon atoms; and that R1 and R2 are not a hydrogen atom at the same time.
A simple and highly stereoselective route to E-.alpha.,.beta.-unsaturated aldehydes
作者:Moncef Bellassoued、Assieh Majidi
DOI:10.1021/jo00061a027
日期:1993.4
Zinc bromide mediated reaction of alpha,alpha-bis(trimethylsilyl)-tert-butylacetaldimine (3) with a wide range of aldehydes takes place under mild conditions and affords the corresponding alpha,beta-unsaturated aldehydes in good yields and with very high E stereoselectivity (>98%). This procedure is successfully applied to the preparation of intermediates for retinoid and natural product synthesis.
Rein; Akermark; Helquist, Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry, 1988, vol. 42, # 8, p. 569 - 572
作者:Rein、Akermark、Helquist
DOI:——
日期:——
New functionalized Horner-Wadsworth-Emmons reagents: useful building blocks in the synthesis of polyunsaturated aldehydes. A short synthesis of (.+-.)-(E,E)-coriolic acid