74119-45-2Relevant academic research and scientific papers
Orthoamides, XXXII. - Reactions of tert-Butoxy-N,N,N',N'-tetramethylmethanediamine with NH- and CH-acidic Compounds
Kantlehner, Willi,Wagner, Fritz,Bredereck, Hellmut
, p. 344 - 357 (2007/10/02)
tert-Butoxy-N,N,N',N'-tetramethylmethanediamine (1) reacts with N-formylglycine ethyl ester (2) and with N-formyl-β-alanine ethyl ester (9) to form the aminomethylene compounds 3 and 10, respectively.Glycine ester is aminomethylenated by 1 at the acidic NH2 group to give the amidine 6.Dimethylaminoformaldehyde dimethyl acetal (5) is also suitable for this reaction.On reaction with 1 the compounds 3 as well as 6 yield the amidine 4.N-Monosubstituted formamides are transformed by 1 into formamidines 13.Reaction of isocyanoacetate 17 and 1 affords the enamine 18, whereas reaction of benzyl isonitrile with 1 gives the amidine 19. 2-Alkyl-Δ2-oxazolines 21, carboximidates 23, 25, and amidines 27 are aminomethylenated by 1 to yield the products 22, 24, 26, and 28, respectively.The vinylogous guanidinium salt 34 is obtained by reaction of 1 with N,N,N',N'-tetramethylacetamidinium tetrafluoroborate (31a).Phosphonates 36 react with 1 to afford the enamines 37.The reaction of 1 on ethyl trimethylsilylacetate (39) gives rise to formation of ethyl 3-dimethylaminoacrylate (11).
