Pent-acetate

AMYLESTER KYSELINY OCTOVE BIRNENOEL OCTAN AMYLU (POLISH) PEAR OIL PENT-ACETATE 1-PENTANOL ACETATE PENTYL ACETATE n-PENTYL ACETATE 1-PENTYL ACETATE PRIMARY AMYL ACETATE... 

PENT ACETATE (628-63-7) Forms explosive mixture with air (flash point 60°F/16°C). High heat may lead to instability. Reacts with strong oxidizers. Incompatible with strong acids, nitrates, strong alkalis. Attacks some plastics, coatings, and rubber. 

Synonyms cas 628-63-7 acetic acid, amyl ester amyl acetic ester pear OIL banana oil birnenoel pent-acetate pentyl acetate... 

Synonyms Acetic acid amyl ester Acetic acid pentyl ester n-Amyl acetate Amylacetic ester Amylacetic ether Pear oil Pent-acetate 1-Pentanol acetate Pentyl acetate 1-Pentyl acetate n-Pentyl acetate Pentyl ethanoate Primaiy amyl acetate Classification Carboxylic acid ester Definition Ester of amyl alcohol and acetic acid Empirical C,H,A Formula CH5COOC5H,... 

Pentabromoethylbenzene. See Pentabromoethyibenzene Pentabromophenyl ether. See Decabromodiphenyi oxide Pentacalcium hydroxide phosphate. See Hydroxyapatite Pent-acetate. See Amy i acetate 1-Pentadecanecarboxylic acid. See Paimitic acid 7-Pentadecanecarboxylic acid. See 2-Hexyi decanoic acid 3-(n-Penta-8 -decenyl) phenol. See Cashew nut sheii oii Pentaerythrite. See Pentaerythritoi... 

Pear oil Pent-acetate 1-Pentanol acetate Pentyl acetate 1-Pentyl acetate n-Pentyl acetate Pentyl ethanoate Primary amyl acetate... 

Pent-acetate. See Amyl acetate Pentachloroantimony. See Antimony pentachloride... 

F rom 5-deoxy-5-iodo-1,2-0-isopropylidene-/ -l-arabinofura-nose (37). Anhydrous silver fluoride (600 mg.) was added to a solution of 300 mg. of 37 in pyridine (4.0 ml.), and the mixture was shaken at room temperature for 24 hours. Ether (4 ml.) was added, and the mixture was passed through a column of silica gel (1.5 X 12 cm.). The column was washed with ether/pyridine, 1 1 v/v. (10 ml.), and the effluent, which contained 5-deoxy-l,2-0-isopropylidene-/ -L-threo-pent-4-enofuranose (33), was concentrated to 4 ml. Acetic anhydride (0.2 ml.) was added, and the reaction mixture was kept at room temperature for 16 hours. Concentration afforded a sirup from which the last traces of solvent were removed by storage in high vacuum at 20°C. The sirup was distilled at 90°C. (bath) at 2.5 X HHmm. The distillate (110 mg., 51%), which crystallized on standing, had physical constants which were identical to material prepared as above. 

Sulfoximines bearing a chiral sulfur atom have recently emerged as valuable ligands for metal-catalysed asymmetric synthesis.In particular, C2-symmetric bis(sulfoximines), such as those depicted in Scheme 1.51, were applied to the test reaction, achieving enantioselectivities of up to 93% ee. The most selective ligand (R = c-Pent, R = Ph) of the series was also applied to the nucleophilic substitution reaction of l,3-diphenyl-2-propenyl acetate with substituted malonates, such as acetamido-derived diethylmalonate, which provided the corresponding product in 89% yield and 98% ee. 

It was demonstrated that reactions of pent-2-en-4-ynyl acetates 112 with organocup-rates 113 proceeded in an SN2" fashion (1,5-substitution) to give the corresponding vinylallene derivatives 114 in good yield [99]. The nucleophilic attack of 113 took place at the triple bond (at the 5-position) in 112 highly regioselectively, the allenic products 114 usually being obtained as mixtures of E- and Z-isomers (Scheme 3.57). 

In another study,125 methyl 5-0-benzoyl-2,3-dideoxy-/8 D-g(t/cero-pent-2-enofuranoside (81) was treated with bromine in methanol in the presence of silver acetate and barium carbonate the two monobenzoates (shown as 84) of methyl 2-bromo-2-deoxy-j8-D-xylofurano-side were obtained. A rationalization for this reaction involves formation of an intermediate bromonium ion (82), produced by attack of Br on the less-hindered side of the double bond, which then undergoes trans-attack by the benzoate group at C-5 to give the benzoxonium intermediate (83) the monobenzoates (84) are obtained on processing of the reaction mixture with water. 

The procedure described here is based on a method outlined in U. S. patent 2,444,536.2 N-Phenylmaleimide has also been prepared by the dry distillation of the aniline salt of malic acid, 4 by treating the aniline salt of malic acid with phosphorus pent-oxide,5 and by treating maleanilic acid with phosphorus trichloride or with phosphorus pentoxide.5 Ring-substituted N-phenylmaleimides, viz., N-(/>-methoxyphenyl)-, N-(p-ethoxy-phenyl)-, and N-(/>-nitrophenyl)maleimide, have been prepared by treatment of the appropriate maleanilic acids with acetic anhydride and fused potassium acetate.7... 

Diacetylaminophenol, C10HJ4NO3, may be considered as the parent compd of its tetranitro deriv but is not used to prepare it X-Tetranitrodiacetylcminopbenol, (02N)4-< (OH).N(OC.CH3)2 raw 373=56, N 18.85% col short ndls (from benz or peer ech), mp 147 47.5 was obtd when benzene-free pent an itro aniline was boiled with acetic anhydride two drops of H2SO 4, followed by cooling, removing the excess anhydride, and mixing with snow (Refs 1 2)... 

The anti-Markownlkov orientation of addition in the presence of electron-acceptor sensitizers applies also to intramolecular reaction, and 5,5-dipheny pent-4-en-1-ol gives a tetrahydrofuran (2.SI) when irradiated in solution with 9,10-dicyanoanthracene, whereas its thermal reaction under proton-acid catalysis leads to 2,2-diphenyltetrahydropyran by Markownikov addition. Sometimes an added sensitizer is not required, if the alkene itself can act as a good electron-donor or electron-acceptor, and this is likely to be the reason why 1-lo-methoxyphenyl)propene adds photochemically to acetic acid (2.52), whereas l-phenylpropene does not. 

Fig. 20. Percentage yields of trans- and cis-pent-2-ene observed in the reaction of pent-1-ene with hydrogen over palladium—charcoal in methanol (o, ), glacial acetic acid ( , ) and benzene (A,A) solution [145],...

Succinic anhydride has been obtained by distillation of succinic acid with phosphorus pentachloride, or from benzoyl chloride and sodium succinate.1 It has been prepared from succinic acid and phosphorus oxychloride or phosphorus pentachloride 2 by distillation of succinic acid with phosphorus pent-oxide 3 from acetyl chloride and barium succinate, or from sue-cinyl chloride and sodium acetate 4 from ethyl succinate and benzoyl chloride 5 from succinic acid and acetyl chloride, or from sucdnyl chloride and oxalic acid 6 from succinic acid and suc-cinyl chloride from succinic acid and acetic anhydride 7 from succinic add and acetyl chloride 8 and from sodium succinate and acetic anhydride.9... 

R. Madsen and B. Fraser-Reid, Acetal transfer via halonium-ion induced reactions of di-pent-4-enyl acetals Scope and mechanism. J. Org. Chem. 60 772 (1995). 

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