Molal Volumes of Solutes. VI. Potassium Chlorate and Hydrochloric Acid

1942 ◽  
Vol 64 (4) ◽  
pp. 758-760 ◽  
Author(s):  
O. Redlich ◽  
J. Bigeleisen
Keyword(s):  
Hydrochloric Acid ◽  
Potassium Chlorate ◽  
Molal Volumes

scholarly journals I. Contributions to the history of orcin.—No. II. Chlorine- and bromine-substitution compounds of the orcins

1872 ◽  
Vol 20 (130-138) ◽  
pp. 72-80
Keyword(s):  
Melting Point ◽  
Hydrochloric Acid ◽  
Potassium Chlorate ◽  
The Other ◽  
Crystalline Substance ◽  
History Of ◽  
Bromine Substitution

Schunck, and subsequently the author of this paper*, many years ago studied the action of chlorine upon orcin, and obtained more or less crystalline products, contaminated with a brown resinous matter, from which however, they did not succeed in separating the crystals in a state of purity. In the year 1864 De Luynes § obtained a crystalline substance by acting on orcin with a mixture of potassium chlorate and hydrochloric acid. De Luynes states it to be trichlororcine, C 7 H 5 Cl 3 O 2 , and in Kekule’s 'Benzolderivate' the melting-point is given at 159°. Pentachlororcin ,C 7 H 3 Cl 5 O 2 . -This compound was obtained by the action of chlorine upon orcin when the former was kept in excess. Two methods of effecting this object were employed,— the first by adding the orcin to chlorine hydrate, the other by the action of potassium chlorate and hydrochloric acid.

THE SYNTHESIS OF SOME DERIVATIVES OF 3,4-METHYLENEDIOXYBENZENE

1964 ◽  
Vol 42 (8) ◽  
pp. 1901-1905 ◽  
Author(s):  
Pritam Singh ◽  
Louis Berlinguet
Keyword(s):  
Aqueous Solution ◽  
Hydrochloric Acid ◽  
Acetic Anhydride ◽  
Hydrazine Hydrate ◽  
Propionic Acid ◽  
Sodium Acetate ◽  
Potassium Chlorate ◽  
Ammonium Formate ◽  
Dilute Aqueous Solution ◽  
Derivatives Of

A few derivatives of 3,4-methylenedioxy-α-nitromethylbenzyl alcohol (I) have been prepared. Chlorination with hydrochloric acid and potassium chlorate gave 6-chloro-3,4-methylenedioxy-α-nitromethylbenzyl alcohol (II) which on refluxing with acetic anhydride and sodium acetate gave 6-chloro-3,4-methylenedioxy-ω-nitrostyrene (III). Attempted reduction of (I) with ammonium formate resulted in dehydration to give 3,4-methylenedioxy-ω-nitrostyrene (IV). Reduction of (I) with hydrazine hydrate gave an isobenzaldoxime (VI).β-(3,4-Methylenedioxyphenyl) serine (VII) was prepared by the condensation of piperonal with glycine. α,β-Dibromo-β-(3,4-methylenedioxyphenyl) propionic acid could not be aminated by a dilute aqueous solution of ethylamine. Decarboxylation and elimination of HBr took place to give ω-bromo-3,4-methylenedioxystyrene (VIII).

Fine Structure of Platelet Interaction with a New Microcrystalline Collagen Preparation

1974 ◽  
Vol 32 ◽  
pp. 58-59
Author(s):  
W. H. Zucker ◽  
R. G. Mason
Keyword(s):  
Fine Structure ◽  
Platelet Aggregation ◽  
Hydrochloric Acid ◽  
Whole Blood ◽  
Platelet Adhesion ◽  
Hemostatic Agent ◽  
Native Collagen ◽  
Fibrillar Morphology ◽  
Clinical Interest ◽  
New Form

Platelet adhesion initiates platelet aggregation and is an important component of the hemostatic process. Since the development of a new form of collagen as a topical hemostatic agent is of both basic and clinical interest, an ultrastructural and hematologic study of the interaction of platelets with the microcrystalline collagen preparation was undertaken.In this study, whole blood anticoagulated with EDTA was used in order to inhibit aggregation and permit study of platelet adhesion to collagen as an isolated event. The microcrystalline collagen was prepared from bovine dermal corium; milling was with sharp blades. The preparation consists of partial hydrochloric acid amine collagen salts and retains much of the fibrillar morphology of native collagen.

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