Results 331 to 340 of about 176,899 (357)
Some of the next articles are maybe not open access.

Arylglyoxals in Synthesis of Heterocyclic Compounds

Chemical Reviews, 2013
AbstractReview: 1829 refs.
Bagher Eftekhari-Sis   +2 more
openaire   +3 more sources

The Reactions of Diazomethane with Heterocyclic Compounds

1963
Publisher Summary Diazomethane undergoes numerous reactions. In the heterocyclic series, its reactions can be divided into the following types: (1) methylations––lactams, thiolactams, amino compounds, and enols; and (2) other reactions. This chapter presents the reactions of diazomethane with heterocyclic compounds. The most important applications of
openaire   +3 more sources

Heterocyclic fluorine compounds—III

Tetrahedron Letters, 1959
Abstract The four monofluoroxanthones substituted in the benzene ring have been prepared by two different routes, namely by cyclisation of the appropriate carboxyfluorodiphenyl ether and by a Balz-Schiemann reaction with the corresponding aminoxanthone.
Hans Suschitzky, F.L. Allen, P. Koch
openaire   +3 more sources

Metallation of Heterocyclic Compounds

1990
This chapter deals with the metallation of 2-methylthiazoles, -thiazolines, -dihydrooxazines and a number of methylpyridines. In all cases lateral metallation is more easy than removal of an sp 2-proton. In this respect, the behaviour of 2-methylthiazoles and of methylpyridines is completely different from that of methylthiophenes and -furans, which ...
openaire   +2 more sources

ChemInform Abstract: Heterocyclic Compounds

Chemischer Informationsdienst, 1984
AbstractReview: (105 refs.
openaire   +1 more source

Heterocyclic Aromatic Compounds

1975
There is a reasonably close analogy between the ring vibrations of benzene and those of pyridine and quinoline, but there are considerable differences in the hydrogen deformation vibrations. However, the out-of-plane hydrogen deformation vibrations appear to be like those of benzene compounds containing an additional substituent.
openaire   +2 more sources

Halogenation of Heterocyclic Compounds

1967
Publisher Summary The chapter focuses on the newer findings in the synthetic and mechanistic aspects of heterocyclic halogenation. Precise mechanistic descriptions of heterocyclic halogenation are not possible with the existing experimental information.
openaire   +2 more sources

The Chemistry of Heterocyclic Compounds. [PDF]

open access: possibleJournal of the American Chemical Society, 1959
openaire   +1 more source

Home - About - Disclaimer - Privacy