Benzylic esters

Add B.P. H.P Anilide Amide phenacyl Ester benzyl Ester phenacyl Ester uronlum Salt ... [Pg.778]

Section 27 16 Carboxyl groups are normally protected as benzyl methyl or ethyl esters Hydrolysis m dilute base is normally used to deprotect methyl and ethyl esters Benzyl protecting groups are removed by hydrogenolysis... [Pg.1151]

In the soap, perfume, and flavor industries benzyl alcohol is primarily used in the form of its aUphatic esters. Benzyl benzoate [120-51-4] finds widespread use as a fragrance diluent. Benzyl alcohol is frequently employed in bar soap fragrances at 30—40 wt % of the fragrance. Benzyl alcohol is commercially available in five grades (Table 2). [Pg.60]

S,N-Ditrityl-L-cysteine diethylamine selt L-Tyrosine lower alkyl ester L-lsoleucine lower alkyl ester Benzyl-L-proline hydrochloride L-Leucine lower alkyl ester Ammonia Hydrogen chloride Glycine lower alkyl ester... [Pg.1155]

Palladium complexes also catalyze the carbonylation of halides. Aryl (see 13-13), vinylic, benzylic, and allylic halides (especially iodides) can be converted to carboxylic esters with CO, an alcohol or alkoxide, and a palladium complex. Similar reactivity was reported with vinyl triflates. Use of an amine instead of the alcohol or alkoxide leads to an amide. Reaction with an amine, AJBN, CO, and a tetraalkyltin catalyst also leads to an amide. Similar reaction with an alcohol, under Xe irradiation, leads to the ester. Benzylic and allylic halides were converted to carboxylic acids electrocatalytically, with CO and a cobalt imine complex. Vinylic halides were similarly converted with CO and nickel cyanide, under phase-transfer conditions. ... [Pg.565]

Benzyl alcohol, benzyl esters Benzyl chloride, sodium carbonate/sodium... [Pg.146]

R = alkyl, alkenyl, alkynyl, aryl, acetate, ester, benzyl or silyl ether groups Scheme 6.15 Cleavage of methoxyphenyl methyl (MPM) ethers using clayan. [Pg.190]

Synonyms AI3 14777 BBP 1,2-Benzenedicarboxylic acid, butyl phenylmethyl ester Benzyl /3-butyl phthalate BRN 2062204 Butyl benzyl phthalate /3-Butyl benzyl phthalate Butyl phenylmethyl 1,2-benzenedicarboxylate Caswell No. 125G CCRIS 104 EINECS 201-622-7 NCl-C54375 NSC 71001 Palatinol BB Phthalic acid, benzyl butyl ester Santicizer 160 Sicol 160 UN 3082 Unimoll BB. [Pg.157]

Keratinocytes, cosmetics, 613 a-Ketoalkyl radicals, 252 y-Ketoalkyl radicals, 252 of-Keto esters, benzylic oxidation, 518 2-Ketoglutarate, hydrogen peroxide determination, 655... [Pg.1470]

Gyclization/hydrosilylation of enynes catalyzed by rhodium carbonyl complexes tolerated a number of functional groups, including acetate esters, benzyl ethers, acetals, tosylamides, and allyl- and benzylamines (Table 3, entries 6-14). The reaction of diallyl-2-propynylamine is noteworthy as this transformation displayed high selectivity for cyclization of the enyne moiety rather than the diene moiety (Table 3, entry 9). Rhodium-catalyzed enyne cyclization/hydrosilylation tolerated substitution at the alkyne carbon (Table 3, entry 5) and, in some cases, at both the allylic and terminal alkenyl carbon atoms (Equation (7)). [Pg.374]

Esters of araliphatic alcohols and aliphatic acids are interesting as flavors and fragrances because of their characteristic odor properties. Acetates are the most popular esters. Benzyl acetate is particularly important commercially and occupies a prominent position in the fragrance and flavor industry. [Pg.116]

Chemical Abstracts refers to sulfites as sulfurous acid esters. Simple esters (benzyl, phenyl, ethyl, etc.) are listed as sulfurous acid esters under the names of the corresponding hydroxy compound. All mixed esters are indexed separately under the heading sulfurous acid esters. ... [Pg.43]

Chloroformic Acid, Benzyl Ester Benzyl Chloformate... [Pg.34]

Benzyl and Phenyl Esters Benzyl acetate (also furfuryl acetate and other similar acetates) and phenyl acetate eliminate the neutral molecule ketene frequently this gives rise to the base peak. [Pg.28]

In the course of the synthesis173 of oxaprostaglandins from 1,4 3,6-dian-hydro-D-glucitol, the latter was first monotosylated at the 5-position and the ester benzylated, to afford 82. Elimination of the tosyl oxy group under special conditions yields the enolethers 83 and 84 (see Scheme 16) as a 2 1 mixture which can be separated by column chromatography. [Pg.138]

Cleavage of esters and lactones (8,447-448).1 SN2-Cleavage of esters and lactones with NaSeC6H5in HMPT-THF is considered to be the most effective known method. The order of reactivity of related reagents is NaSeC6H5-18-crown-6-THF > LiSe(, H5 HMPT THF > LiSeC6H5 THF. Methyl esters are cleaved more readily than ethyl esters benzyl, isoamyl, and isopropyl esters are cleaved in high yield, but more slowly. Methyl esters are cleaved easily, irrespective of steric hindrance. Amides are completely inert. [Pg.580]

Benzyl Alcohols, Esters Benzyl-type linkers... [Pg.453]

Benzyl acetate Phenylethyl alcohol and esters Benzyl acetate Benzyl propionate Benzyl valerianate Benzyl isobutyrate Dimethyl benzyl acetate... [Pg.38]

Other esters are sometimes used to protect carboxylic acids, especially when there is a desire to deprotect the acid by using different conditions from those available for methyl esters. Benzyl esters are prepared in the usual manner but can be cleaved by reaction with hydrogen and a catalyst. Again it is the benzylic carbon-oxygen bond that is broken in the hydrogenolysis reaction ... [Pg.1016]

This mechanism is like mechanism B but the hydride transfer in the adduct formed in step 2 displaces OH- to form an ester (benzyl benzoate) that is then hydrolysed to the products. This was at... [Pg.1082]

Carboxylic acids are protected as their esters such as methyl esters, tert-hutyl esters, allyl esters, benzyl esters, phenacyl esters and alkoxyalkyl esters. The esters are formed by the reaction of carboxylic acid with alcohol, and the reaction is known as esterification. [Pg.45]

Methyl ester t-Butyl ester Allyl ester Benzyl ester... [Pg.45]

SYNS ASCABIN ASCABIOL BENYLATE BENZOIC ACID, PHENYLMETHYL ESTER BENZYL ALCOHOL BENZOIC ESTER BENZYL BENZENE-CARBOXYLATE BENZYL BENZOATE (FCC) BENZYLETS BENZYL PHENYLFORMATE COLEBENZ FEMA No. 2138 NOVOSCABIN PERUSCABIN SCABANCA VANZOATE VENZONATE... [Pg.144]

SYNS BENZYL ALCOHOL CINNAMIC ESTER BENZYL y-PHENYLACRYLATE Q CINNAMEIN trans-CINNAMIC ACID BENZYL ESTER FEMA No. 2142 3-PHENYL-2-PROPENOIC ACID PHENYLMETHYL ESTER (9CI)... [Pg.153]

The scope of this reaction is similar to that of 16-61. Anhydrides are somewhat less reactive than acyl halides, and they are often used to prepare carboxylic esters. Benzyl acetates have been prepared via microwave irradiation of benzylic alcohols... [Pg.1412]

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