Erratum: Acetylenic esters. II. Further addition reactions with sulphur and nitrogen-containing compounds
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چکیده
منابع مشابه
Spectral and Antimicrobial Screening of Cu(II), Ni(II) and Co(II) Coordination Compounds with Nitrogen Oxygen and Sulphur Containing Tridentate Schiff Base
A series of coordination compounds have been prepared with tridentate Schiff base ligands, 2 ethyl-[(hydroxy propyl)]3, 1 (4H) quinazoline4-semicarbazone [EHPQS) and 2-ethyl-[(hydroxy propyl)]3, 1 (4H) quinazoline4-thiosemicarbozone [EHPQT]. The obtained complexes were characterized by molar mass, elemental analysis, infrared spectra, electronic spectra, magnetic susceptibility molar conductanc...
متن کاملSynthesis, reactions and biological activity of some new bis-heterocyclic ring compounds containing sulphur atom
BACKGROUND The derivatives of thieno[2,3-b]thiophene belong to a significant category of heterocyclic compounds, which have shown a wide spectrum of medical and industrial application. RESULTS A new building block with two electrophilic center of thieno[2,3-b]thiophene derivatives 2 has been reported by one-pot reaction of diketone derivative 1 with Br2/AcOH in excellent yield. A variety of h...
متن کاملAddition of Zinc Homoenolates to Acetylenic Esters and Amides : A Formal [ 3 + 21 Cycloaddition
The copper-catalyzed conjugate addition-cycloacylation reaction of zinc homoenolatee with acetylenic esters or acetylenic amides is described. The zinc homoenolate is prepared from [ (ethoxycyclopropy1)oxyltrimethylsilane and zinc chloride in ether. Addition of an acetylenic amide or ester provides 2-carboxamidoor 2-carboalkoxy-3-alkylcyclopent-2-en-l-ones ingood to excellent yields. The reacti...
متن کاملCarbohydrates and sulphur-containing compounds in the anaemic buccal epithelium.
Mucosal biopsies from the inside of the cheek show epithelial atrophy, glycogen depletion, and an occasional increase in sulphydryl content in both iron-deficiency and megaloblastic anaemias. These changes are the same in the two types of anaemia but are more marked in the latter group.
متن کاملSynthesis and analysis of some bis-heterocyclic compounds containing sulphur.
A facile and convenient synthesis of a series of bisheterocycles 7a,b 10, 12 and 13a,b containing a thieno[2,3-b]thiophene base unit via the versatile, hitherto unreported 3-[3,4-dimethyl-5-(3-nitrilopropanoyl)thieno[2,3-b]thiophen-2-yl]-3-oxopropanenitrile (4) is described.
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1967
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v67-325