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Conway L, Evans P. An enantiodivergent synthesis of N-Boc-protected (R)- and (S)-4-amino cyclopent-2-en-1-one. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211047780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Routes are reported for the synthesis of both (1 R)- and (1 S)- tert-butyl-(4-oxocyclopent-2-en-1-yl)carbamate 2. Featuring Mitsunobu reactions with di- tert-butyl iminodicarbonate, both syntheses begin from ( S)-4-[( tert-butyldimethylsilyl)oxy]cyclopent-2-en-1-one (3) and take advantage of the 1,4-cyclopentenyl dioxygenation pattern of this optically active starting material. Thus both (−)- and (+)-2 have been accessed from 3 in an enantiodivergent manner in 11% and 10% overall yield over five and seven reaction steps, respectively.
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Affiliation(s)
- Lorna Conway
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin, Ireland
| | - Paul Evans
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin, Ireland
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