118194-72-2Relevant academic research and scientific papers
Synthesis of Acyl(phenylselanyl)methylidene(triphenyl)-λ5-arsanes and their Wittig-type Reactions
Huang, Zhi-Zhen,Huang, Xian,Huang, Yao-Zeng
, p. 95 - 96 (2007/10/02)
Acyl(phenylselanyl)methylidene(triphenyl)-λ5-arsanes 3 have been synthesized by treating acylmethylidene(triphenyl)-λ5-arsanes 1 with phenylselanyl iodide 2; α-selanylarsonium ylides 3 are sufficiently reactive to undergo Wittig-type reactions, affording a novel method for the stereoselective synthesis of (Z)-α-phenylselanyl α,β-unsaturated ketones 6.
ALKYLATION OF ARSENIC AND PHOSPHORUS β-KETOYLIDES
Nesmeyanov, Nik. A.,Kharitonov, V. G.,Zhuzhlikova, S. T.,Petrovskii, P. V.,Antipin, M. Yu.,et al.
, p. 1417 - 1428 (2007/10/02)
The dual reactivity of a series of arsenic and phosphorus β-ketoylides in alkylation reactions and the effect of various factors on the reaction path were studied.The arsenic ketoylides were more susceptible to C-alkylation than the phosphorus ylides.In a number of cases C-alkylation was accompanied by secondary O-alkylation.The proportion of O-alkylation increases sharply in the transition from methyl iodide to methyl bromide and then to Me3O(1+)BF4(1-) and also in the series MeI, PhCH2I, EtI.The introduction of alkyl substituents at the α position greatly hinders C-alkylation.Only one of the two possible geometric isomers is always formed during the reactions at the oxygen center.X-ray crystallographic analysis of triphenyl(2-methoxy-1-propenyl)arsonium iodide showed that this compound was the Z isomer.
