The [4+2] cycloaddition of 1,6-dihydro-2-dimethylamino-4,6,6-trimethylpyrimidine with acetylenic compounds.
نویسندگان
چکیده
منابع مشابه
Light-induced stereospecific intramolecular [2+2]-cycloaddition of atropisomeric 3,4-dihydro-2-pyridones.
Atropisomeric 3,4-dihydro-2-pyridones undergo stereospecific [2+2]-photocycloaddition in solution with high stereoselectivity (ee > 98% and de > 96%) in the product. The chiral transfer during phototransformation was rationalized based on the stability/reactivity of the biradical.
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15 صفحه اولSynthesis of 2-(9,10-dihydro-9,10-propanoanthracen-9-yl)-N-methylethanaminevia a [4+2] cycloaddition.
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Chiral N-heterocyclic carbenes were found to be efficient catalysts for the formal [2+2] cycloaddition reaction of alkyl(aryl)ketenes and nitroso compounds to give the corresponding 1,2-oxazetidin-3-ones in moderate to good yields with high enantioselectivities. Reductive ring-opening of the oxazetidinones give the corresponding α-hydroxy acid derivatives in good yields.
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1987
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.35.2694