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Volumn , Issue 13, 2005, Pages 2758-2770

Exocyclic-endocyclic n-acyliminium ion equilibration via an intramolecular α-thioamidoalkylation in the synthesis of fused N,S-heterocyclic systems: Some new parameters

Author keywords

Acyliminium ion; Isomerization; Nitrogen heterocycles; Sulfur heterocycles

Indexed keywords


EID: 22144482745     PISSN: 1434193X     EISSN: None     Source Type: Journal    
DOI: 10.1002/ejoc.200400760     Document Type: Article
Times cited : (25)

References (26)
  • 1
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    • For exploratory results describing acid-catalyzed conversion of aromatic isocyanates and cyclic thiepinones into thiazolinones and isothiazolinones, respectively, see: a) A. Jilale, B. Decroix, J. Morel, Chem. Script. 1987, 27, 423-428;
    • (1987) Chem. Script. , vol.27 , pp. 423-428
    • Jilale, A.1    Decroix, B.2    Morel, J.3
  • 8
    • 0032474877 scopus 로고    scopus 로고
    • For relevant studies of π-cyclization reactions of thio-N-acyliminium ions for heterocyclic synthesis, see: a) S. M. Sheehan, L. S. Beall, A. Padwa, Tetrahedron Lett. 1998, 39, 4761-4764;
    • (1998) Tetrahedron Lett. , vol.39 , pp. 4761-4764
    • Sheehan, S.M.1    Beall, L.S.2    Padwa, A.3
  • 9
    • 0032548132 scopus 로고    scopus 로고
    • and references cited therein
    • b) A. Padwa, A. G. Waterson, Tetrahedron Lett. 1998, 39, 8585-8588 and references cited therein.
    • (1998) Tetrahedron Lett. , vol.39 , pp. 8585-8588
    • Padwa, A.1    Waterson, A.G.2
  • 10
    • 0025063283 scopus 로고
    • and references cited therein
    • Similar nucleophilic effects have been found during the ringchain tautomerism in 1,3-thiazolidines; see, for example: F. Fülöp, J. Mattinen, K. Pihlaja, Tetrahedron 1990, 46, 6545-6552 and references cited therein.
    • (1990) Tetrahedron , vol.46 , pp. 6545-6552
    • Fülöp, F.1    Mattinen, J.2    Pihlaja, K.3
  • 11
    • 22144467300 scopus 로고    scopus 로고
    • note
    • 4 gave only the corresponding 3-acetyloxyisoindolinone and 3-phenyl- thioisoindolinone 5, respectively. The latter product 5 was obtained by a successive process including i. the cleavage of the -N-CH-S- linkage obtained partially from hydroxy lactam 4, and ii. the intramolecular nucleophilic attack of the generated thiophenol on the endocyclic N-acyliminium ion of type B.
  • 12
    • 22144485508 scopus 로고    scopus 로고
    • note
    • The products were obtained in excellent yields of 85% (R = Me), 92% (R = Ph), 98% (R = p-ClPh), and 92% (R = Bzl). In the case of methyl and benzyl groups, the thiazines I and II were accompanied by the methylidene and benzylidene derivatives as the consequence of the dehydration of the α-alkyl-α-hydroxy lactams 4 (R = Me, Bzl).
  • 15
    • 77957077000 scopus 로고
    • (Ed.: A. Brossi), Academic Press, New York, chapter 4
    • Reviews: a) H. Hiemstra, W. N. Speckamp, in The alkaloids (Ed.: A. Brossi), Academic Press, New York, 1988, vol. 32, chapter 4, pp 271-339;
    • (1988) The Alkaloids , vol.32 , pp. 271-339
    • Hiemstra, H.1    Speckamp, W.N.2
  • 17
    • 0001673091 scopus 로고
    • (Eds.: B. M. Trost, I. Fleming), Pergamon Press, Oxford
    • c) H. Hiemstra, W. N. Speckamp, in Comprehensive Organic Synthesis (Eds.: B. M. Trost, I. Fleming), Pergamon Press, Oxford, 1991, vol. 2, pp 1047-1082;
    • (1991) Comprehensive Organic Synthesis , vol.2 , pp. 1047-1082
    • Hiemstra, H.1    Speckamp, W.N.2
  • 18
    • 0001513757 scopus 로고    scopus 로고
    • Houben-Weyl (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E. Schaumann), Thieme, Stuttgart
    • d) H. Koning, W. N. Speckamp, in Stereoselective Synthesis, Houben-Weyl (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E. Schaumann), Thieme, Stuttgart, 1996, vol. 3, pp. 1952-2010;
    • (1996) Stereoselective Synthesis , vol.3 , pp. 1952-2010
    • Koning, H.1    Speckamp, W.N.2
  • 26
    • 22144492571 scopus 로고
    • Chem. Abstr. 1968, 69, 58959k.
    • (1968) Chem. Abstr. , vol.69


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.