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- W2034692335 abstract "Abstract The natural α‐amino acid phenylhydrazides 1a − d readily react with the aldehydes 2a − d and ketones 2e − h to produce the 3‐(phenylamino)imidazolidin‐4‐one derivatives 4 in good yields. Their structures were confirmed by X‐ray structural analysis. Polycyclic systems were obtained from the reaction of L ‐tryptophan phenylhydrazide ( 1d ) and L ‐histidine phenylhydrazide ( 1e ) with benzaldehyde ( 2c ), which gave 1,10‐diphenyl‐2‐(phenylamino)‐2,9,10a‐triazacyclopenta[ b ]fluoren‐3‐one ( 5dc ) and 4,6‐diphenyl‐7‐(phenylamino)‐3,4,6,7,8a,9‐hexahydro‐8 H ‐diimidazo[1,5‐ a :4′,5′‐ d ]pyridin‐8‐one ( 5ec ), respectively. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)" @default.
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- W2034692335 date "2003-09-16" @default.
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- W2034692335 title "Condensation Reaction Betweenα-Amino Acid Phenylhydrazides and Carbonyl Compounds" @default.
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- W2034692335 doi "https://doi.org/10.1002/ejoc.200300251" @default.
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