Acetals acylation

ENDOCYCLIC ENAMINE SYNTHESIS JV-METHYL- 2- PHENYL- A -TETRA-HYDROPYRIDINE, 54, 93 Enol acetates, acylation of,... [Pg.59]

Isocrotonic acid, 53, 123 (+)-ISOPINOCAMPHEOL, 52, 59 Isopropenyl acetate, acylation of, 52, 1... [Pg.131]

Electrolytic reduction, apparatus, 52, 23 Enol acetates, acylation of, 52,1 Enol esters, preparation, 52, 39 Epichlorohydrin, with boron trifluoride diethyl therate and dimethyl ether to give trimethyloxonium tetra-fluoroborate, 51,142 ESTERIFICATION OF HINDERED ALCOHOLS f-BUTYL p-TOLUATE,... [Pg.74]

Keywords Acetals, Acylals, Allylations, Bismuth(III), 3,4-Dihydro-2//-l -benzopyrans, Ene reactions, Epoxide-olefin cyclizations, Piperidines, Tetrahydro-quinolines, THP ethers... [Pg.45]

Carbonyl-protected acetals, acylals and aminals were used " in their reductive cyclization to form spiro derivatives of cyclopropanone. Good yields of the three-membered spiro compounds were obtained from the acetals while poor yields were obtained by using the acylals and aminals (Table 3). For example, however, the resulting cyclopropanone acetals... [Pg.921]

Acylation of Water (Hydrolysis) with Imidothioates, Thioorthoesters and Ketene S,S-Acetals Acylation of Arenes and Carbanions under Formation of Carbon-Carbon Bonds... [Pg.435]

Acylation of compounds of type 63 was carried out with acid anhydrides, occasionally in the presence of sodium acetate. - - Acylation was also carried out with acid chlorides in benzene or chloroform, and either in the presence of pyridine or in the presence of potassium hydrogen carbonate. Reactions starting from the sodium salt of 63 (R = H) were also carried out. The formation of more than one product has usually been reported. [Pg.298]

The racemic alcohol was prepared by lithium aluminum hydride reduction of (R,S)-4. An abbreviated library of commercially available enzymes (entries 1-11 in Tab. 1) was used to screen the vinyl acetate acylation. Enzymes in entries 2, 3, 4, 8, and 11 catalyzed the acylation with a relatively fast rate (>20% conversion in... [Pg.358]

Acylation of sulfide and ether nucleophiles by protonated acyl derivatives is uncommon in condensed phase but, in the gas phase, ions of composition Ac+XMe2 are readily formed. For example, vinyl and iso-propenyl acetates acylate ethers under ICR conditions (11) ... [Pg.76]

Acyl... s. a. Acet..., Acyl group, a-Keto..., Replacement N-Acyl as N-protective group 26, 454... [Pg.255]

Potassium carbonate/sodium acetate Acyl(azothio)glycosides... [Pg.493]

Ketene reacts not only with acetals and hemiacetal chlorides if catalyzed by Lewis acids but also with mixed acetal-acylals.— E Ketene added with ice-cooling during 4 hrs. to a soln. of tetrahydro-2-pyranyl acetate and ZnClg in ethyl acetate, the product added to abs. ethanol, and refluxed 3 hrs. -> ethyl tetra-hydro-2-pyranacetate. Y 70%. F. e. and limitations s. C. D. Hurd and R. D. Kimbrough, Jr., Am. Soc. 83, 236 (1961). [Pg.166]

N-Acylamide acetals Acyl hydroxamates Acylurethans Carbamic carboxylic anhydrides... [Pg.587]

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