Action Of Diazomethane Research Articles

153. Action of diazomethane on hydroxy-compounds and of diazomethane derivatives on phenanthraquinone

153. Action of diazomethane on hydroxy-compounds and of diazomethane derivatives on phenanthraquinone

The Action of Diazomethane upon Acyclic Sugar Derivatives. IV.1 Ketose Synthesis

The Action of Diazomethane upon Acyclic Sugar Derivatives. IV.¹ Ketose Synthesis

The Action of Diazomethane upon Acyclic Sugar Derivatives. III.1 A New Synthesis of Ketoses and of their Open Chain (keto) Acetates

The Action of Diazomethane upon Acyclic Sugar Derivatives. III.¹ A New Synthesis of Ketoses and of their Open Chain (keto) Acetates

Chemical examination of Indian lichens

The constitution of erythrin has been definitely established. The new important observations now made are as follows: (1) it is not a carboxylic acid; (2) it is optically active; (3) picroerythrin is identical with montagnetol; (4) trimethyl erythrin a compound in which all the phenolic hydroxyl groups are methylated is obtained by the action of diazomethane; (5) on hydrolysis with alcoholic potash the methyl ether yields the ester of dimethyl orsellinic acid and the ester of isoeverninic acid. Consequently, it is concluded that erythrin is the erythrityl ester of lecanoric acid. This is in agreement with the occurrence of lecanoric acid and montagnetol along with erythrin in the lichens.

The Action of Diazomethane on Lactones and on Lignins

The Action of Diazomethane on Lactones and on Lignins

67. The formation of methylene ethers by the action of diazomethane on α-keto-lactones and on diphenyl triketone, with a note on the pyrolysis of coumarandione and allied substances

67. The formation of methylene ethers by the action of diazomethane on α-keto-lactones and on diphenyl triketone, with a note on the pyrolysis of coumarandione and allied substances

The Action of Diazomethane upon Acyclic Sugar Derivatives. I

The Action of Diazomethane upon Acyclic Sugar Derivatives. I

Molecular structure and physical properties of prussic acid. Part I. —Refractive dispersion of prussic acid and its homologues

The structure of prussic acid has been a subject of constant interest ever since Gautier, by his discovery of the isocyanides provided an alternative formula for the acid. In general, opinion has leaned towards the view that the free acid is a cyanide rather than an isocyanide. In particular, Wade regarded its relatively unobjectionable physiological properties as evidence of a cyanide structure; but evidence of an isocyanide structure has been found by Peratoner and Palazzo in the conversion of the acid into methyl isocyanide by the action of diazomethane. A possible compromise may be found in the suggestion, already made in Butlerow’s classical paper “Ueber Isodibutylen,” that prussic acid may be an example of reversible isomeric change, as represented by the scheme CH 3 . C ≡ N ← H. C ≡ N ⥧ H. N ═ C → CH 2 . N ≡ C Methyl cyanide. Prussic acid. Methyl iso cyanide.

Additions and Corrections - The Action of Diazomethane on Some Aromatic Acyl Chlorides. V. The Mechanism of the Reaction

Additions and Corrections - The Action of Diazomethane on Some Aromatic Acyl Chlorides. V. The Mechanism of the Reaction

The Action of Diazomethane on Uracil

The Action of Diazomethane on Uracil

CLXV.—The action of diazomethane on some aromatic acyl chlorides

The first page of this article is displayed as the abstract.

XXII.—Studies in the camphane series. Part XXV. Action of diazomethane on the two modifications of isonitrosocamphor

XXII.—Studies in the camphane series. Part XXV. Action of diazomethane on the two modifications of isonitrosocamphor