Answer to: Give the general formula for an amine. Name the characteristic group it contains. What property makes the simple amines unpopular? By...
Formylation of functionalized primary aromatic and aliphatic amines with acetic formic anhydride (AFA) followed by borane:methyl sulfide reduction in the same pot affords the corresponding -methylamines in excellent isolated yields, uncontaminated bybis alkylation; the reaction sequence is applicable to ...
The covering term “vita-amine” reflected his (mistaken) belief that other deficiency diseases – scurvy, rickets, pellagra – would be found to result from the absence of different amines (i.e., nitrogen-containing) molecules. In the case of pellagra, niacin (aka vitamin B3, aka ...
Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using weakly nucleophilic amines and alkyl/aryl iodides are provided. The resultant carbon-isotope labeled amides are useful as radiopharm... O Itsenko,T Kihlberg,B Langstrom - US 被引量: 3发表: 2012...
This invention relates to new aliphatic-aromatic amines of the general formula (OH) 2CaHl-R--N-Rr-C 6HO H Rs wherein Ri and R2 represent alkyl or alkylene radicles and R3 represents hydrogen or an alkyl or alkylene radicle. It is known that dihydroxyethylphenylamine, like adrenalin, cau...
There are at least 43 carcinogens described in cigarette smoke which include polyaromatic hydrocarbons, heterocyclic hydrocarbons, N-nitrosamines, aromatic amines, aldehydes, volatile carcinogens, inorganic compounds, and radioactive elements. Cigarette smoke contains substances that act at every stage of ...
This invention relates to certain new unsaturated aromatic ethers, and in particular concerns allyl-type ethers of dihydroxy-diphenyls having the general formula CH=C-cH-o O-CH-C=CH _ _ B -- R" R' R R R' re s h , l r wherein R represents hydrogen, lower alkyl, or 10 aryl, R...
This invention relates to a new and improved process of preparing guanamines. Guanamines are heterocyclic compounds having the triazine ring and may be represented by the following general formula: R C c I I NH2--C C-NH2 N in which R is an organic radical attached to the carbon atom of...
3b). Xanthones with methoxy and allyl amino substituents (K17–K21) were obtained by alkylation of hydroxyxanthones or by nucleophilic aromatic substitution of 3,6-bistriflate xanthones with corresponding amines (Supplementary Fig. 4). With the key intermediates K2–K21 in hand, we explored the...
II. crown compounds represented by the following general formula (V) and (VI): ##STR6## wherein n10-n12each represent an integer of 1 to 8; and III. alkylamines, said organic compound having a hydrogen-to-carbon ratio of 1.7 or more and said carbonaceous substance having 1-50 hydrogen...