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Monteiro JL, Moreira NM, dos Santos DA, Paixão MW, Corrêa AG. Step economy strategy for the synthesis of amphoteric aminoaldehydes, key intermediates for reduced hydantoins. PURE APPL CHEM 2018. [DOI: 10.1515/pac-2017-0705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Despite of the orthogonal reactivity of the N–H aziridines aldehyde, these compounds exist as an equilibrium of three different forms – whereas the dimeric one is mostly observed in a variety of solvents. In this work, we have developed an alternative protocol for the aminoaldehyde dimers synthesis in two steps starting with an organocatalyzed aziridination between α,β-unsaturated aldehydes and a protected amine to afford known isolable and stable N-protected aziridine aldehydes. After Boc-deprotection, dimeric species were immediately formed from monomeric N–H aziridine aldehydes. From this building-block new reduced hydantoins were prepared via [3+2]-annulation with isocyanates.
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Affiliation(s)
- Júlia L. Monteiro
- Centre of Excellence for Research in Sustainable Chemistry , Federal University of São Carlos , São Carlos 13565-905 , SP, Brazil
| | - Natália M. Moreira
- Centre of Excellence for Research in Sustainable Chemistry , Federal University of São Carlos , São Carlos 13565-905 , SP, Brazil
| | - Deborah A. dos Santos
- Centre of Excellence for Research in Sustainable Chemistry , Federal University of São Carlos , São Carlos 13565-905 , SP, Brazil
| | - Márcio W. Paixão
- Centre of Excellence for Research in Sustainable Chemistry , Federal University of São Carlos , São Carlos 13565-905 , SP, Brazil
| | - Arlene G. Corrêa
- Centre of Excellence for Research in Sustainable Chemistry , Federal University of São Carlos , São Carlos 13565-905 , SP, Brazil
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Turuta AM, Kamernitskii AV, Fadeeva TM, Pabinger A, Bogdanov VS, Lindeman SV, Struchkov YT. Transformed steroids. 171. Heterocyclization in the 16?,17?-epiminopregn-5-ene-3?,21-diol-20-one series. Russ Chem Bull 1988. [DOI: 10.1007/bf00953426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Transformed steroids. Russ Chem Bull 1977. [DOI: 10.1007/bf01152716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kal'sines D, Kamernitskii AV, Turuta AM. Transformed steroids. Russ Chem Bull 1976. [DOI: 10.1007/bf00921441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Transformed steroids. Russ Chem Bull 1976. [DOI: 10.1007/bf00922001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ponsold K, Schönecker B, Pfaff I. [17-alpha-azido-and 17-alpha-amino-pregnane]. CHEMISCHE BERICHTE 1967; 100:2957-66. [PMID: 5593843 DOI: 10.1002/cber.19671000921] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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