- An alternative oxidising and brominating method converting alcohols to aldehydes and β-bromoethyl esters using ionic liquid [Bmim][Br3]
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[Bmim][Br3] is an oxidising reagent which converts alcohols into aldehydes and ketones in mild conditions and good yields; the use of the ionic liquid (IL) as both an oxidising and a brominating reagent in the one-pot synthesis of β-bromoethyl esters from benzyl alcohols and diols has also been studied.
- Zhang, Yu,Bao, Weiliang
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p. 263 - 266
(2007/10/03)
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- One-pot synthesis of ω-bromoesters from aromatic aldehydes and diols using pyridinium hydrobromide perbromide
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A simple and efficient one-pot procedure has been developed for the synthesis of ω-bromoesters from aromatic aldehydes and diols in the presence of pyridinium hydrobromide perbromide (PHPB) and triethoxymethane in which aldehyde reacts first with diol and the product, cyclic acetal, reacts with PHPB to give the final product, ω-bromoesters.
- Aoyama, Tadashi,Takido, Toshio,Kodomari, Mitsuo
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p. 1989 - 1992
(2007/10/03)
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- A new synthetic method for haloalkyl carboxylic esters from the radical ring cleavage of cyclic acetals with haloform
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A one-pot reaction of cyclic acetals with haloform catalyzed by AIBN(2,2'-azobisisobutyronitrile) provides a novel convenient way to prepare directly haloalkyl carboxylic esters in good yields.
- Hai-Xia, Lin,Liang-Heng, Xu,Nai-Ju, Huang
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p. 303 - 306
(2007/10/03)
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- Synthesis of Nitriles from Haloesters, Haloketones and Haloethers
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The action of NaCN on haloesters, haloketones and haloethers has been studied.Haloesters wherein halogen and ester functions are located on adjacent carbon atoms, do not furnish the corresponding nitriles, whereas those with halogen and ester functions not located on adjacent carbon atoms, furnish the corresponding nitriles in good yields.The presence of hydroxy or ether function on the carbon adjacent to primary halide bearing carbon atom does not interfere in the reaction with cyanide. δ-Haloketones are transformed to ketonitriles, γ-Haloketones are transformed to cyclopropyl ketones and epoxyhalides to epoxynitriles.
- Talekar, D. G.,Joshi, P. L.,Ramaiah, P.,Rao, A. S.
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p. 145 - 151
(2007/10/02)
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- PALLADIUM COMPLEX-CATALYZED CARBONYLATION OF ORGANIC HALIDES IN THE PRESENCE OF CYCLIC ETHERS: HALOHYDRIN ESTER SYNTHESIS
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Cyclic ethers were cleaved by palladium complex-catalyzed carbonylation of organic halides to give halohydrin esters.
- Tanaka, Masato,Koyanagi, Masayuki,Kobayashi, Toshiaki
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p. 3875 - 3878
(2007/10/02)
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