2- Furyl phenyl ketone

Furyl phenyl ketone, AS9 l-( -Furyl)-3-( -pyrryl)-2-propenone, AT08... 

FURYL PHENYL KETONE see FQ0050 FUSARENONE X see FQROOO FUSARIC ACID see BSIOOO FUSARINIC ACID see BSIOOO FUSARIOTOXIN T 2 see FQSOOO FUSED BORAX see DXG035... 

C11H802 3-furyl phenyl ketone 6453-98-1 558.15 49.498 2 21681 C11H11Br02 ethyl trans-4-bromocinnamate 24393-53-1 568.15 50.469 2... 

Conjugate addition was almost quantitative for the reaction between di- -butyl zinc or tri-n-butyl aluminum and both methyl isopropenyl ketone and phenyl vinyl ketone. With 2-furyl vinyl ketone an increase in initiator concentration produced crosslinking of the material [353]. 

A soln. of 10 g. / -(2-furyl)vinyl phenyl ketone in 95%-ethanol satd. with dry HCl-gas, refluxed 10 hrs., the acid separated from the resulting acid-ester mixture, and the ester refluxed 4-5 hrs. with ethanolic 30%-KOH -> 5.3 g. / -(5-phenyl-2-furyl)propionic acid. F. e. s. P. R. Vijayasarathy and G. S. Khrishna Rao, Indian J. Chem. 11, 301 (1973). 

The series of new 4-aryl-2-phenylthieno[3,4- ]furans 396 and the selenium analogue 397 were prepared from the readily available aryl 2-bromomethyl-5-phenyl-3-furyl ketones by cyclization with thioacetamide and iV,iV-diethyl-selenopropanamide, respectively (Equation 9) <1998JHC71>. 

Alkyl halides possessing / -hydrogens are usually poor substrates for carbonylative cross-coupling due to competitive / -hydride elimination/ Allyl chlorides can be used in carbonylative cross-coupling with allylstannanes/ phenyl-, 3-furyl, or vinylstannanes " to afford allylketones in modest to good yields. Divinylketones can be accessed through the reaction of vinylstannanes with vinyl iodides or vinyl triflates, with the latter requiring the addition of LiCl. Synthetic potential of this method has been proved in the formation of macrocyclic ketone jatrophone. In the reaction of vinyl triflates with tetramethyltin or aryltrimethylstannanes the additional activation by ZnCle is required. 

IR spectra there is absorption in the region 1540-1620 cm-1, characteristic of the chelated cis-enol bands characteristic of a free carbonyl group are absent. The effect of substituents on the enolization of /3-di-ketones (in acetone) was studied by NMR spectroscopy. In the cu-acyl-2-acetoselenophene (20) and a> -acyl-3-acetoselenophene(21) series, the acyl groups COR increase the enolization in the following order of R methyl < a-furyl < a-thienyl < trifluoromethyl < phenyl < a-pyridyl. Thus, /S-diketones containing aroyl or heteroaroyl radicals together with selenienyl exist completely as the cis-enols.121... 

SYNS DB 134 DIIODO-3,3 HYDROXY-4 BENZO T.2 FURANNE KETONE, 3.5-DIIODO-4-HYDROXY-PHENYL 2-FURYL... 

KETONE, DIETHYLAMINO(7,8,9,10-TETRAHYDRO-ll-6H-CYCLOHEPTA(b)QUINOLINYL) see TCOlOO KETONE, 3,5-DIIODO-4-HYDROXYPHENYL 2,5-DIMETHYL-3-FURYL see DNF450 KETONE, 3,5-DIIODO-4-HYDROXYPHENYL 2-ETHYL-3-BENZOFURANYL see E1D200 KETONE, 3,5-DIIODO-4-HYDROXYPHENYL 5-ETHYL-2-FURYL see EID250 KETONE, 3,5-DIIODO-4-HYDROXYPHENYL 2-FURYL see DNF500 KETONE, DIMETHYL see ABC750 KETONE, 5-DIMETHYLAMINO-3-INDOLYL PHENYL see DOU700... 

Ketone, ethyl vinyl. See Ethyl vinyl ketone Ketone, 2-furyl methyl. See 2-Acetylfuran Ketone, o-hydroxybenzyl phenyl. See Benzoin Ketone, mesityl phenyl. See 2,4,6-T ri methylbenzophenone Ketone, methyl isoamyl. See Methyl isoamyl ketone... 

Cycloaddition Reactions witha,j9-Unsaturated Ketones and Aldehydes. The LUMO-lowering effect of the iminium ion when conjugated to olefins was exploited in [4 + 2] cycloaddition reactions. When a,/8-unsaturated ketones were used with cyclopen-tadiene, imidazolidinone catalyst (I HCIO4) provided a racemic mixture at 0°C as a 9 1 ratio of endo exo isomers in 27% yield (eq 11). Better results were obtained with catalysts having phenyl (3), or, 5-Me-furyl group (4) instead of the tert-butyl group at C-2 (eq 11). However, the best conditions for the [4 + 2] cycloaddition between enals and cyclopentadiene were found with catalyst 2 (eq 12). This increased selectivity with structurally-modified catalysts is attributed to a better control of the iminium ion geometry in the transition state for cycloaddition. 

Antonioletti, R., D Auria, M., De Mico, A., Piancatelli, G., and Scettri, A., Photochemical behaviour of 5-bromo-2-furyl ketones. Synthesis of 5-aryl-2-furyl ketones. Tetrahedron, 41, 3441, 1985. Antonioletti, R., D Auria, M., D Onofrio, E, Piancatelli, G., and Scettri, A., Photochemical synthesis of phenyl-2-thienyl derivatives,/. Chem. Soc., Perkin Trans. 1, 1755, 1986. 

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