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Synthesis of 3-Substituted Dihydro-1-phenylamino-1H-pyrrolo[1,2-a]imidazole-2,5(3H,6H)-diones from α-Amino Acid Phenylhydrazides and Levulinic Acid

✍ Scribed by Giancarlo Verardo; Paola Geatti; Marcello Merli; Elena E. Castellarin


Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
142 KB
Volume
2004
Category
Article
ISSN
1434-193X

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## Abstract The homochiral 1,3‐dioxanes 8a–e with a 2‐bromophenyl substituent in position 2 and an electrophilic group in position 4 were stereo‐ and regioselectively prepared from the (__S__)‐malic acid derivatives 6a, 6b, 11, and 14. Attempts to prepare the tricycles 5a–c by connecting the 2‐phen