7541-16-4Relevant articles and documents
Pentaalkylmethylguanidinium methylcarbonates - Versatile precursors for the preparation of halide-free and metal-free guanidinium-based ILs
Oelkers, Benjamin,Sundermeyer, Joerg
scheme or table, p. 608 - 618 (2011/05/11)
Pentaalkylmethylguanidinium methylcarbonates 6 can easily be prepared from pentaalkylguanidines 5 and dimethyl carbonate (DMC) in a sustainable solvent-free synthesis. Most of the title compounds are room temperature ionic liquids (RTILs) which provide convenient access to halide-free guanidinium-based ILs (GILs) 7via acid-base reactions and subsequent decarboxylation, similar to industrially important imidazolium methylcarbonates 1. The Royal Society of Chemistry.
GEMINAL SYSTEMS. COMMUNICATION 28. ALCOHOLYSIS OF N-CHLORO-N-ALKOXYAMIDES AND SYNTHESIS OF N,N-DIALKOXYUREAS
Rudchenko, V. F.,Shevchenko, V. I.,Kostyanovskii, R. G.
, p. 543 - 551 (2007/10/02)
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FREE-RADICAL REACTIONS OF N,N-DIMETHYLAMINODIALKOXYMETHANES
Kurbanov, D.,Pastushenko, E. V.,Zlot-skii, S. S.,Rakhmankulov, D. L.
, p. 850 - 854 (2007/10/02)
The homolytic liquid-phase reactions of N,N-dimethylaminodialkoxymethanes, initiated by tert-butoxyl radicals in the range of 120-150 deg C, were investigated.The mechanism of the unbranched chain process of fragmentation of the acetals with quadratic chain termination at the alkyl radicals was determined.As a result the corresponding dimethylcarbamic esters, dimethylformamide, alkanes, and carbonyl compounds were formed.The relative rate constants for the transformations of the nitrogen analogs of the ortho esters were calculated.The difference in the activation energies for the cleavage of the C-H bonds adjacent to one and three heteroatoms was determined for N,N-dimethylaminodimethoxymethane (ΔE=5 kcal/mole) and N,N-dimethylaminodipentyloxymethane (ΔE=8 kcal/mole).
