68790-30-7Relevant academic research and scientific papers
New anthracenyl-substituted phosphonates: Synthesis and utility
Kumara Swamy,Srinivas, Venu,Pavan Kumar,Praveen Kumar
, p. 893 - 901 (2007/12/27)
Chlorination of α-hydroxyphosphonate anthracen-9-yl(5,5-dimethyl-2- oxo-2λ5-1,3,2-dioxaphosphinan-2-yl)methanol (11) using thionyl chloride unexpectedly yields 10-(5,5-dimethyl-2-oxo-2λ5-1,3, 2-dioxaphosphinan-2-ylmethylene)anthracen
A Stereoselective Synthesis of Olefins by a New Semi-stabilized Phosphonium Ylide
Gupta, K. C.,Pathak, P. K.,Saxena, B. K.,Srivastava, Nirupma
, p. 196 - 198 (2007/10/02)
A new semi-stabilized phosphonium ylide, viz. (9-anthrylmethylene)triphenylphosphorane (2) generated by the action of sodium hydride or sodamide in benzene or sodium methoxide in methanol on (9-anthrylmethyl)triphenylphosphonium bromide (1), has been reacted with substituted aromatic aldehydes (3) to give exclusively the trans-1-(9-anthryl)-2-substituted-arylethylenes (4).The variation of solvents and bases has no effect on the stereoselectivity of the reaction.The trans-geometry of 4 has been established by IR and PMR spectral data.
Effect of Bulky Size of Carbonyl Systems on Betaine Decomposition of Semi-stablized Arsonium Ylids
Gupta, K. C.,Srivastava, N.,Nigam, R. K.
, p. 802 - 803 (2007/10/02)
Reactions of substituted benzylidentriphenylarsenanes (2a-i) with 9-anthraldehyde and 9-fluorenone have been studied using benzene-sodamide, chloroform-sodium hydride and methanol-sodium ethoxide as solvent-base pairs.In all the cases olefins (5a-i and 6a-i) are formed exclusively.Variation of solvents and bases has no effect on the course of betaine decomposition formed by the nucleophilic attack of ylids on carbonyl systems.
SYNTHESIS OF DIARYLETHYLENES WITH CONDENSED RINGS BY THE WITTIG REACTION
Listvan, V. N.,Gonchar, G. V.,Rudenko, E. S.,Onishchenko, T. A.,Stasyuk, A. P.
, p. 1528 - 1533 (2007/10/02)
The Wittig reaction was used for the synthesis of diarylethylenes containing condensed naphthalene, anthracene, phenanthrene, and pyrene rings.Unlike 9-anthracenecarbaldehyde, which gives the trans isomers almost exclusively in the Wittig reaction with ar
