Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 3034-86-4, Name is Methyl 4-ethynylbenzoate, SMILES is O=C(OC)C1=CC=C(C#C)C=C1, in an article , author is Assy, MG, once mentioned of 3034-86-4, Safety of Methyl 4-ethynylbenzoate.
Synthesis of some new pyrimidines, thienopyrimidines and thiopyranopyrimidines
Isothiocyanate 1 reacted with enaminone 2 to give thioamide 3 that cyclized by sodium hydroxide to pyrimidine 4 but cyclized by bromine to give isothiazole 5, pyrimidine 4 was transformed into thiopyranopyrimidines 7, 9 or 11 upon respective reaction with benzaldehyde, maleic acid, or maleic anhydride. Aminative cyclization of 4 yielded isothiazolopyrimidine 13. Reaction of 4 and ethyl bromoacetate or phenacyl bromides afforded thienopyrimidines 15a-b respectively. Oxidation of 4 yielded oxopyrimidine 16.
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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com