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Volumn 62, Issue 20, 1997, Pages 6746-6753

Cycloaddition Reactions of Chiral 2-Amino-1,3-butadienes with Nitroalkenes: Synthesis of Enantiomerically Pure 4-Nitrocyclohexanones

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EID: 0000965115     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo970237m     Document Type: Article
Times cited : (24)

References (62)
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    • Gree, R.1    Kessabi, L.2    Mosset, P.3    Martelli, J.4    Carrie, R.5
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    • Datta, S.C.1    Franck, R.W.2    Tripathy, R.3    Quigley, G.J.4    Huang, L.5    Chen, S.6    Sihaed, A.7
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    • For a very recent review on the chemistry of 2-amino-1,3-butadienes, see: Enders, D.; Meyer, O. Liebigs Ann. 1996, 1023-1035.
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    • (1996) J. Am. Chem. Soc. , vol.118 , pp. 4904
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    • (1996) J. Chem. Soc., Chem. Commun. , pp. 2543
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    • note
    • 1H NMR], derived from the reaction of the chiral diene with two molecules of 2-nitro-1-propene.
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    • note
    • 1H NMR of the Mosher's esters obtained by reduction of the carbonyl group, followed by esterification with (R)-(+)-MPTA chloride. Experimental details and spectrocopic data are available in the supplementary material of ref 1.
  • 45
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    • For the synthesis of nonchiral 2-morpholino-1,3-butadienes, see ref 8a
    • For the synthesis of nonchiral 2-morpholino-1,3-butadienes, see ref 8a.
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    • note
    • 1 = TBDMS) was reacted with 2-methyl-1-nitro-1-propene under the Standard conditions, no reaction product was observed and the starting materials were recovered.
  • 47
    • 1542648086 scopus 로고    scopus 로고
    • note
    • In our previous paper dedicated to the reaction of nonchiral 2-amino dienes with β-nitrostyrene (see ref 14), we observed that very polar solvents such as MeOH favor the cyclization process, giving rise to a single diastereoisomer. However, less polar solvents like THF or chloroform lead to a mixture of three compounds: two diastereoisomers of nitrocyclohexanone and the open chain compound derived from the Michael type addition of the enamine to the electrophilic double bond.
  • 48
    • 1542753353 scopus 로고    scopus 로고
    • Similar observations have been reported by Enders et al. (ref 8c)
    • Similar observations have been reported by Enders et al. (ref 8c).
  • 49
    • 1542438410 scopus 로고    scopus 로고
    • Absolute configurations of 41 and 4m have been determined by X-ray using the anomalous dispersion technique and are available in the supplementary material of ref 1
    • Absolute configurations of 41 and 4m have been determined by X-ray using the anomalous dispersion technique and are available in the supplementary material of ref 1.
  • 50
    • 1542543134 scopus 로고    scopus 로고
    • note
    • Enantiomeric excesses were determined from furans 7 and not from open chain compounds 6 due to the unstability of the latter. Upon standing, compounds 6 undergo isomerization of the Z double bond.
  • 61
    • 0011189446 scopus 로고
    • Collect. 2nd ed.; Blatt, A. H., Ed.; John Wiley and Sons: New York
    • Worrall, D. E. In Organic Syntheses, Collect. Vol. I, 2nd ed.; Blatt, A. H., Ed.; John Wiley and Sons: New York, 1948; pp 413-415.
    • (1948) Organic Syntheses , vol.1 , pp. 413-415
    • Worrall, D.E.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.