* * *
Ehrlich diazo r.Medical dictionary. 2011.
diazo reaction — noun : a reaction in which a diazo compound is made or used; specifically : a reaction in various diseases (as typhoid fever) consisting of a red discoloration of the urine on addition of diazobenzenesulfonic acid … Useful english dictionary
Ehrlich diazo reaction — a reaction of a pure pink or red color resulting from the action of diazotized sulfanilic acid and ammonia upon certain aromatic substances, e.g., urobilinogen, found in the urine in some conditions. This reaction has diagnostic value in hepatic… … Medical dictionary
Diazo — For a discussion of copiers using the diazo process, see Whiteprint. Diazo refers to a type of organic compound called diazo compound that has two linked nitrogen atoms (azo) as a terminal functional group. The general formula is R2C=N2. The… … Wikipedia
reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… … Medical dictionary
Réaction organique — Les réactions organiques sont des réactions chimiques impliquant des composés organiques[1]. Les principaux types de réactions organiques sont l élimination, l addition, la substitution, le réarrangement et les réactions d oxydoréduction… … Wikipédia en Français
egg yellow reaction — the appearance of a yellow foam in an Ehrlich diazo reaction before the addition of ammonia, thought to indicate acute pneumonia … Medical dictionary
Barton-Kellogg reaction — The Barton Kellogg reaction is a coupling reaction between a ketone and a thioketone through a diazo intermediate forming an alkene.[1][2][3] … Wikipedia
Doyle-Kirmse reaction — The Doyle Kirmse reaction is an organic reaction in which in the original scope an allyl sulfide reacts with trimethylsilyldiazomethane to form the homoallyl sulfide compound.[1] The reaction was first reported by W. Kirmse in 1968 [2] and… … Wikipedia
Bamford-Stevens reaction — The Bamford Stevens reaction is a chemical reaction whereby treatment of tosylhydrazones with strong base gives alkenes.cite journal | author = Bamford, W. R.; Stevens, T. S. | journal = J. Chem. Soc. | date = 1952 | pages = 4735–4740 | title =… … Wikipedia
Organic reaction — Organic reactions are chemical reactions involving organic compounds.[1] The basic organic chemistry reaction types are addition reactions, elimination reactions, substitution reactions, pericyclic reactions, rearrangement reactions,… … Wikipedia
