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Volumn 44, Issue 21, 2003, Pages 4035-4039

Synthesis of lactams and other nitrogen heterocycles by intramolecular cyclizations of carbamates and acyl derivatives of aminosulfones

Author keywords

[No Author keywords available]

Indexed keywords

CARBAMIC ACID DERIVATIVE; HETEROCYCLIC COMPOUND; LACTAM DERIVATIVE; NITROGEN DERIVATIVE; PYRROLIDINE DERIVATIVE; SULFONE DERIVATIVE;

EID: 0037990063     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(03)00878-5     Document Type: Article
Times cited : (7)

References (35)
  • 25
    • 0034725907 scopus 로고    scopus 로고
    • and references cited therein
    • Back T., Nakajima K. J. Org. Chem. 65:2000;4543. and references cited therein.
    • (2000) J. Org. Chem. , vol.65 , pp. 4543
    • Back, T.1    Nakajima, K.2
  • 28
    • 0025170734 scopus 로고
    • For the preparation of hydroxysulfones, see:
    • For the preparation of hydroxysulfones, see: Gopalan A.S., Jacobs H.K. Tetrahedron Lett. 31:1990;5575.
    • (1990) Tetrahedron Lett. , vol.31 , pp. 5575
    • Gopalan, A.S.1    Jacobs, H.K.2
  • 29
    • 85031185776 scopus 로고    scopus 로고
    • The aminosulfones were readily prepared by conversion of the hydroxysulfone into the corresponding mesylate followed by reaction with excess benzylamine at 75°C. The benzyl protecting group could be removed by reaction with Pd-black in 4.4% formic acid in methanol.
    • The aminosulfones were readily prepared by conversion of the hydroxysulfone into the corresponding mesylate followed by reaction with excess benzylamine at 75°C. The benzyl protecting group could be removed by reaction with Pd-black in 4.4% formic acid in methanol.
  • 30
    • 85031192931 scopus 로고    scopus 로고
    • 3S: C, 65.63; H, 5.81; N, 4.25. Found: C, 65.40; H, 5.99; N, 4.50%.
    • 3S: C, 65.63; H, 5.81; N, 4.25. Found: C, 65.40; H, 5.99; N, 4.50%.
  • 31
    • 85031191972 scopus 로고    scopus 로고
    • Spectroscopic and elemental analysis of all compounds are in agreement with the assigned structures.
    • Spectroscopic and elemental analysis of all compounds are in agreement with the assigned structures.
  • 35
    • 85031184895 scopus 로고    scopus 로고
    • 2S: C, 70.95; H, 7.09; N, 3.94. Found: C, 70.60; H, 6.75; N, 4.21%
    • 2S: C, 70.95; H, 7.09; N, 3.94. Found: C, 70.60; H, 6.75; N, 4.21%.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.