Results 241 to 250 of about 58,285 (293)

Organohypervalent heterocycles

Chemical Society Reviews
This review summarizes structural and synthetic aspects of heterocyclic molecules incorporating an atom of a hypervalent main-group element. The higher thermal stability of hypervalent heterocycles, as compared to their acyclic analogs, adds special feature to their chemistry.
Ravi Kumar, Toshifumi Dohi, Viktor V. Zhdankin   +2 more
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Synthesis of Heterocycles

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Heterocyclic chemistry

Annual Reports Section "B" (Organic Chemistry), 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
openaire   +1 more source

A Heterocyclic Peptide Nanotube

Journal of the American Chemical Society, 2003
An open-ended hollow tubular structure is designed based on hydrogen-bond-directed self-assembly of a chimeric cyclic peptide subunit comprised of alternating alpha- and epsilon-amino acids. The design features a novel 1,4-disubstituted-1,2,3-triazole epsilon-amino acid and its utility as a peptide backbone substitute.
W Seth, Horne, C David, Stout, M Reza, Ghadiri   +2 more
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Synthesis of Heterocyclic Homotriptycenes

The Journal of Organic Chemistry, 2011
A series of novel heterocyclic homotriptycenes bearing furan, thiophene, and pyridine rings, 7a-f, were synthesized by intramolecular dehydration reactions of 10,10-dihetarylmethyl-9,10-dihydroanthracen-9-ols 6a-f. In the presence of acids, the secondary alcohols 6a-f show different reactions which depend on the electron densities of the attached ...
Hong, Zhang, Derong, Cao, Wenjie, Liu, Huanfeng, Jiang, Herbert, Meier   +4 more
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Heterocyclization of 1,3‐Butadienethiolates.

ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
V. D. Dyachenko, R. P. Tkachev, A. N. Chernega   +2 more
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Heterocycles from methylenecyclopropanes

Organic & Biomolecular Chemistry, 2015
The construction of heterocycles from MCPs affords more opportunities for the quick synthesis of elaborately substituted products. This review aims to summarize the novel organic reactions of MCPs to produce heterocycles published in recent years, which have provided specific and powerful tools for organic synthesis.
Lei, Yu, Mingxuan, Liu, Fenglin, Chen, Qing, Xu   +3 more
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Novel heterocyclic spirobenzofurans

Journal of the Chemical Society C: Organic, 1970
Novel 1′,3′-dialkyl-1′,2′,3′,4′,5′,6′-hexahydrospiro(benzofuran-2,5′-pyrimidine)-3(2H)-ones and 1′,4′-dialkyl-2′,3′,4′,5′,6′,7′-hexahydrospiro(benzofuran-2,6′-[1,4]diazepine)-3(2H)-ones have been synthesised from benzofuran-3-one by Mannich reactions with primary amines and diamines.
J, Tattersall, J B, Taylor
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Synthesis of oxygen heterocycles

Tetrahedron Letters, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A. K. Ganguly, P. K. Mahata, D. Biswas
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Heterocycles from Alkylidenecyclopropanes

Chemical Reviews, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
BRANDI, ALBERTO, CICCHI, STEFANO, GOTI, ANDREA, CORDERO, FRANCA MARIA   +3 more
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