Reaction of Four membered Lactones with Amines.
نویسندگان
چکیده
منابع مشابه
Reductive hydroxyalkylation/alkylation of amines with lactones/esters.
We have developed a one-pot method for the direct intermolecular reductive hydroxyalkylation or alkylation of amines using lactones or esters as the hydroxyalkylating/alkylating reagents. The method is based on the in situ amidation of lactones/esters with DIBAL-H-amine complex (for primary amines) or DIBAL-H-amine hydrochloride salt complex (for secondary amines), followed by reduction of the ...
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1 Harding, V. J., and Warneford, F. H. S., J. Biol. Chem., 1916, xxv, 319. 2 Dakin, H. D., and Dudley, H. W., J. Biol. Chem., 1913, xv, 127. 3 Neuberg, C., Biochem. Z., 1913, lvi, 500. 4 Ruhemann, S., J. Chem. Sot. 1910, xcvii, 2026. 5 In this and the preceding paper triketohydrindene hydrate has sometimes been written as the triketone for the sake of simplicity in explaining the decompositions...
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(Z)-Selective olefination of several lactones with ketene silyl acetals was achieved by the catalysis of carbon acids (C-H acids) having a bis(triflyl)methyl group as an acidic functionality; in particular, the triple carbon acid having three bis(triflyl)methyl groups in phloroglucinol shows an excellent catalytic performance.
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Replacement of halide from N-(haloboryl)formamidines for the weakly coordinating anion [B(C(6)F(5))(4)](-), using [Et(3)Si(toluene)](+)[B(C(6)F(5))(4)](-), induces a ring closure leading to the cationic four-pi-electron four-membered heterocycles [HC(N-2,6-diisopropylphenyl)(2)BR](+) [R = N(i-Pr)(2), Ph]. Subsequent deprotonation of the B-amino derivative affords the corresponding N-heterocycli...
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The synthesis of the first four-membered N-heterocyclic carbene is described. Depending on the substituents on the nitrogen atoms, it is possible to characterize at room temperature the carbene dimer or the free carbene. Crystallographic analyses are provided for these carbene species.
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1954
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.75.315