Some 6,6-disubstituted 2,4-cyclohexadien-1-ones and the facial selectivity in their Diels–Alder reactions with dimethyl acetylenedicarboxylate
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چکیده
منابع مشابه
Microwave assisted condensation reactions of 2-aryl hydrazonopropanals with nucleophilic reagents and dimethyl acetylenedicarboxylate.
The reaction of methyl ketones 1a-g with dimethylformamide dimethylacetal (DMFDMA) afforded the enaminones 2a-g, which were coupled with diazotized aromatic amines 3a,b to give the corresponding aryl hydrazones 6a-h. Condensation of compounds 6a-h with some aromatic heterocyclic amines afforded iminoarylhydrazones 9a-m. Enaminoazo compounds 12a,b could be obtained from condensation of 6c with s...
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15 صفحه اولCrystal structures of the dinitrate-bis-(acetylenedicarboxylate) and acetylenedicarboxylate pseudorotaxane complexes of [24-pyrimidinium crown 6]
The reaction of [24-Pyrim C6][NO3]6 ! 8H2O with the monopotassium salt of acetylenedicarboxylic acid yielded single crystals of [24-Pyrim C6][C4O4]2[NO3]2 ! 7 H2O, (1). The compound crystallized in the triclinic space group P1, with a = 9.731(8) Å, b = 10.953(9) Å, c = 14.270 (14) Å, a = 108.06(7)", b = 94.86(7)", c = 99.01(7)", Z = 1, R = 0.0737, R¢ = 0.1024, and 3709 independent reflections. ...
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چکیده ندارد.
evolutionary origin and phylogenetic relationships among fusarium oxysporum f. sp. melonis isolates in iran and their relationship with nonpathogenic isolates
پژمردگی فوزاریومی خربزه و طالبی با عامل fusarium oxysporum f. sp. melonis از بیماری های مهم قارچی در مناطق رشد این گیاهان می باشد. جدایه های f. oxysporum از گیاهان و خاک ریزوسفر متعلق به پنج استان مهم تولیدکننده ی خربزه و طالبی جداسازی شد و بر پایه ی بیماری زایی در ارقام افتراقی، گروه های سازگاری رویشی (vegetative compatibility groups)، توالی سنجی ناحیه ی جداکننده ی بین ژنی دی اِن اِی ریبوزومی (n...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1989
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v89-007