General formulae of compounds

First we studied100 1,1-dimethyl 2-chloro cyclohexene 149 which can only lead to a cyclohexyne. General formula of compounds which can be formed are given in Scheme 57. 

Qi) Other Kanamycin Derivatives. Cyclic carbamate derivatives of kanamycin A have been prepared [148], and in another report regiospecific methylation and stereospecific hydrogenation were used to synthesize three kanamycin B analogs with the general formula of compound 302 [149], The same group [150] has also reported conversion of the neosamine ring of kanamycin B to the bicyclo-oxazoctene unit compoimd 303 (part structure). 

The Subject Index of over 20 000 entries has been compiled from keywords, names and formulae in the text and tables. It covers general classes of compound, specific compounds, general types of reaction, specific and named reactions, spectral and other properties, and other topics in heterocyclic chemistry. More details are again given at the beginning of the index in Volume 8. 

Mercaptans are organic sulfur compounds having the general formula of R-S-H. As stated earlier, amine treating is not effective for the... 

This Formula Index consists of over 28 000 compounds that occur in the 6562 text pages of Volumes 1-6. Indexed compounds may appear in the text, equations, Schemes, Figures or Tables. Only specific compounds and not general classes of compound have been indexed the counter ion has been excluded. Limitations of space do not permit every coordination compound to be indexed each time it is mentioned, therefore compounds are only indexed when considered to be important in the context of the topic under discussion. 

Write the general formula of each of the following types of compounds, using R to denote an organic group (a) amine (b) alcohol (c) carboxylic acid (d) aldehyde. 

The first column of the periodic table, Group 1, contains elements that are soft, shiny solids. These alkali metals include lithium, sodium, potassium, mbidium, and cesium. At the other end of the table, fluorine, chlorine, bromine, iodine, and astatine appear in the next-to-last column. These are the halogens, or Group 17 elements. These four elements exist as diatomic molecules, so their formulas have the form X2 A sample of chlorine appears in Figure EV. Each alkali metal combines with any of the halogens in a 1 1 ratio to form a white crystalline solid. The general formula of these compounds s, AX, where A represents the alkali metal and X represents the halogen A X = N a C 1, LiBr, CsBr, KI, etc.). 

The interest in the synthesis and properties of delafossite structured compounds that have the general formula of ABO2 have grown due to their p-type conductivity and optical transparency. The application of ultrasound for the synthesis of ternary oxide AgMC>2 (M = Fe, Ga) has been investigated by Nagarajan and Tomar [44]. Above materials were obtained in crystalline form within 40-60 min of sonication. 

Cationic surfactant blends of quats were studied by FIA-ESI-MS(+). The general formula of the compounds was (R)nN (CH3)4 n with R = C12-C22. These compounds applied in products for personal... 

We see from the above that there is a striking alternation in the physiological properties of w-fluorocarboxylic esters of the general formula of F- [CH2]w-C02.R. Thus when n is an odd number the compound is highly toxic to animals, whereas when n is even the compound is non-toxic. All the toxic compounds are powerful convulsant poisons and showed symptoms of the fluoroacetate type. 

The general formula of the normal tetrahedral structure, for the compound CmAw, is. 

About two hundred new disubstituted oxadiazoles have recently been claimed to have extraordinary pharmaceutical properties 2a). The general formula of these compounds is LX ... 

The E" " values were calculated from thermodynamic data. There are a large number of different acids, especially of the polyacid type. The complex forms exist in equilibrium, which depends on the pH. There are several compounds with hydrogen, the general formula of which can be given as Si H2 +2-Solubility equilibrium ... 

The aldehydes are a group of compounds with the general formula R-CHO. The aldehyde functional group is always written -CHO, even though this does not represent the aldehyde s structural formula. It is written in this way so that the aldehydes will not be confused with R-OH, the general formula of the alcohols. 

The general formula of either variety, when free from impurity, is Pa S2, that is, one equivalent of iron combined with two equivalents of sulphur, the chemical name of this compound being bisulphide of iron. 

The Formula Index, as well as the Subject Index, is a cumulative index for Volumes XI through XIV. The chief aim of this index, like that of other formula indexes, is to help in locating specific compounds or ions, or even groups of compounds, that might not be easily found in the Subject Index, or in the case of many coordination complexes are to be found only as general entries in the Subject Index. All specific compounds, or in some cases ions, with definite formulas (or even a few less definite) are entered in this index or noted under a related compound, whether entered specifically in the Subject Index or not. As in the latter index, boldface type is used for formulas of compounds or ions whose preparations are described in detail, in at least one of the references cited for a given formula. 

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