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
Index: Takai, Kazuhiko; Nitta, Kenji; Utimoto, Kiitiro Journal of the American Chemical Society, 1986 , vol. 108, # 23 p. 7408 - 7410
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Citation Number: 737
Abstract
" 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 ...
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