Secondary penta-2,4-diynylamines were synthesized, and their p K a (MeOH) values were obtained by means of nonaqueous potentiometric titration. The reactions of the amines with phenyl isothiocyanate, leading to 2-(phenylimino)-5-(prop-2-ynilidene)thiazolidines, were studied. The N -butyl...
Cyclic carbonates and their reactions with aminesSix-membered cyclic carbonates (2-oxo-1,3-ioxanes) in which keto or carbohydrocarbyloxy groups are bound to the 5 position of the ring are disclosed. They react surprising quickly with primary or secondary cyclic amines, and the novel product ...
aIn the absence of a signal on the priority channel and during reception of a signal on the additional channel, the duration of each listening period on this channel shall be at least 850 ms. 在没有一个信号时在优先权渠道和在一个信号的招待会期间在另外的渠道,毎听的期间的期间在这种渠道将是...
For example, methods for preparing amines and their reactions are detailed in Sidgewick's "The Organic Chemistry of Nitrogen", Clarendon Press, Oxford, 1966; Noller's "Chemistry of Organic Compounds", Saunders, Philadelphia, 2nd Ed., 1957; and Kirk-Othmer's "Encyclopedia of Chemical ...
(67,68) were obtained in 43 and 37% yield, respectively. It is worth noting the higher reactivity of the corresponding aziridinium intermediates in the case of propargylamines as the homodiaminated products were also formed and their separation was difficult, leading to relatively lower yields...
Since amides are readily prepared, their reduction is a favoured method for the making of all amine groups. Reductive Amination of Aldehydes and Ketones Catalytic or chemical reactions in the presence of ammonia or primary or secondary amines may eliminate aldehydes or ketones, resulting in primary,...
New polyfunctional silicon-containing amines C_6[CH_2CH_2SiMe(OCH_2CH_2NR_2)_2]_6 (R = H, Me) and their reactions with cobalt(II) chloride and dicobalt oct... Hexakis[bis(2-aminoethoxy)methylsilylethyl]benzene and hexakis[bis(N,N-dimethyl-2-aminoethoxy)methylsilylethyl]benzene C6[(NR...
The gas-phase acidity of hindered amines and some reaction chemistry of their corresponding amide ionsGAS PHASE ACIDITIESHINDERED AMINESFA-SIFTION MOLECULE REACTIONSThe gas-phase acidities of three hindered amines have been determined by equilibrium measurements using tandem flowing afterglow-selected-ion...
therapeutic active compounds, the use of the sulfonyloxazolamines as therapeutic active compounds and/or for the production of pharmaceutical preparations in the control of disorders of the central nervous system, a pharmaceutical preparation and the production thereof, and novel compounds of the formula...
Unsaturated Amines. IV. Structures and Reactions of the Dehydrosparteines and their Salts1—3 来自 Semantic Scholar 喜欢 0 阅读量: 33 作者:NJ Leonard,PD Thomas,VW Gash 摘要: The dehydrogenation of (-)-sparteine by means of mercuric acetate leads successively to (-)-Δ5-dehydrosparteine and ...