22376-51-8Relevant articles and documents
γ-Methylenation of α,β-unsaturated ketones
Caputo,Ferreri,Mastroianni,Palumbo,Wenkert
, p. 2305 - 2312 (2007/10/02)
γ-Methylene derivatives of α,β-unsaturated ketones are obtained readily by a one-pot procedure exploiting the reaction of O-silylated dienolates with commercially available formaldehyde N,N-dimethyliminium chloride in anhydrous N,N-dimethylformamide, in s
THE SYNTHESIS OF MANNICH BASES FROM KETONES AND ESTERS VIA ENAMINONES.
Schuda, Francis Paul,Ebner, Cynthia B.,Morgan, Tina M.
, p. 2567 - 2570 (2007/10/02)
The reactions of a series of activated methylene compounds with amide acetals to form high yields of enaminones is described.Further conversion to the Mannich bases via reduction with lithium aluminium hydride is also covered.
Carbon-Carbon Bond Formation by the Use of Chloroiodomethane as a C1 Unit. III. A Convenient Synthesis of the Mannich Base from Enol Silyl Ether by a Combination of Chloroiodomethane and N,N,N',N'-Tetramethylmethanediamine
Miyano, Sotaro,Hokari, Hiroshi,Hashimoto, Harukichi
, p. 534 - 539 (2007/10/02)
The Mannich dimethylaminomethylation of carbonyl compounds is conveniently carried out via enol trimethylsilyl ethers by a combination of chloroiodomethane (CH2ClI) and N,N,N',N'-tetramethylmethanediamine (TMMD) in DMSO as the solvent at ambient temperatute.The mechanism of the transformation is discussed on the basis of product analysis and 1H NMR spectral studies.The reagent system CH2ClI/TMMD also provides a convenient route to the Eschenmoser's salt ().