Reactions between Imino Esters and alpha-Amino Acid Esters. III. 2-Phenyl-5(4)-imidazolone and its Reactions.
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منابع مشابه
Hydrolytic Reactions of Esters and
The hydrolytic reactions of esters and amides of thiosulphurous acid ate investigated in a homogeneous medium. The esters are hydrolysed by alkali to gire sulphide, sulphite and thiosulphate whereas the amides are resistant towards alkali. Both the esters and amides are hydrolysed by acids giving hydrogen sulphide, sulphur dioxide, polythionates and elemental sulphur. The hydrolysis of these es...
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Tandem reaction of 2-alkynylbenzonitriles with a Reformatsky reagent turned out to be a novel and efficient approach toward 1-aminonaphthalene-2-carboxylates. Interestingly, with 2-(3-hydroxyprop-1-ynyl)benzonitriles as the substrates, a more sophisticated cascade process occurred to give 9-aminonaphtho[2,3-c]furan-1(3H)-ones in good yields. By using this tandem reaction as a key step, a concis...
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Introduction It has been proposed that oxygen functional groups (i.e., carboxylic acids and their salts, phenols, and ethers), prevalent in low rank coals, are responsible for cross-linking reactions that inhibit the efficient conversion of low-rank coals to liquid fuels and chemicals. In the pyrolysis and liquefaction of low-rank coals, cross-linking has been correlated with evolution of CO2 a...
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The development of a direct catalytic asymmetric Mannich reaction is shown and its potential demonstrated by the synthesis of optically active lactones via 4-hydroxyglutamic acid ester derivatives. The catalytic asymmetric Mannich reaction of carbonyl compounds with α-imino esters [Eq. (1); Ts = p-toluenesulfonyl] gives good yields and diastereoselectivities, as well as excellent enantioselecti...
متن کاملLecture 6: Hydrolysis Reactions of Esters and Amides
• draw the mechanism of ester hydrolysis under acidic and basic reaction conditions; • account for the irreversibility of the hydrolysis reaction under basic conditions; • form new esters by baseor acid-catalysed transesterification mechanisms; • draw the mechanism for cleaving tert-butyl esters and understand why the mechanism is different from that for methyl esters; • understand why protonat...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1953
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.07-1030