Synthesis of 2H-Pyran-3-(6H)-ones.
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چکیده
منابع مشابه
SOME UNUSUAL REACTIONS OF 3-PHENYLAMINOISOXAZOL-5 (2H)- ONES
3-Phenylaminoisoxazol-5(2H)-ones,s ubstituted on nitrogen with an isoquinoline or quinazoline group, react with tertiary amine bases to give imidazo annelated compounds. When the N-substituent is a nitropyridine, 2-aminoindole derivatives are formed instead. Evidence is presented that the reactions proceed by initial addition of the tertiary arnine to C-4
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A short and high yielding route for the preparation of the title compound, starting from commercially available 1,5-dihydroxynaphthalene, is described. The key step in the sequence is the air oxidation of a bis(trimethylsilyloxy)diene precursor.
متن کاملDirect alkenylation of indolin-2-ones by 6-aryl-4-methylthio-2H-pyran-2-one-3-carbonitriles: a novel approach
A direct one-pot base-induced alkenylation of indolin-2-ones has been developed by using 6-aryl-4-methylthio-2H-pyran-2-one-3-carbonitriles. Different bases such as MeONa, NaH and t-BuONa have been used to optimize the reaction conditions to obtain the desired product. NaH in THF was found to be the most suitable for the alkenylation of indolin-2-ones. Reaction in the presence of other bases le...
متن کاملTandem reaction of 3-hydroxyhexa-4,5-allenic esters: a novel access to diversely substituted 2H-pyran-2-ones and indenes.
A highly efficient synthesis of diversely substituted 2H-pyran-2-ones and indenes through Brønsted acid promoted tandem reaction of the readily obtainable 3-hydroxyhexa-4,5-allenic esters under extremely mild conditions has been developed.
متن کاملsome unusual reactions of 3-phenylaminoisoxazol-5 (2h)- ones
3-phenylaminoisoxazol-5(2h)-ones,s ubstituted on nitrogen with an isoquinoline or quinazoline group, react with tertiary amine bases to give imidazo annelated compounds. when the n-substituent is a nitropyridine, 2-aminoindole derivatives are formed instead. evidence is presented that the reactions proceed by initial addition of the tertiary arnine to c-4
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1980
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.34b-0295