Simple and selective method for aldehydes (RCHO). fwdarw.(E)-haloalkenes (RCH: CHX) conversion by means of a haloform-chromous chloride system

K Takai, K Nitta, K Utimoto

文献索引：Takai, Kazuhiko; Nitta, Kenji; Utimoto, Kiitiro Journal of the American Chemical Society, 1986 , vol. 108, # 23 p. 7408 - 7410

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被引用次数: 737

摘要

" The aldehyde (1.0 mmol) was treated with haloform (2.0 mmol) and CrCI2 (6.0 mmol) in THF. blsolated yields.'The isomeric ratios of the alkenyl halides were determined by GLPC or NMR. dA combination of CrBr, and LiAIH4 (1: 0.5 molar ratio) was employed instead of CrCI,.'Eight millimole of the Cr (I1) reagent was used per millimole of the aldehyde. fkopulegol, the ene-reaction product of citronellol, was produced as a byproduct. gThe E/Z ...