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Volumn 16, Issue 15, 2010, Pages 4541-4549

Fine-tuning the dimerization of tetraureacalix [4] arenes

Author keywords

Calixarenes; Dimerization; Hydrogen bonds; Self assembly; Supramolecular chemistry

Indexed keywords

APOLAR SOLVENTS; BULKY SUBSTITUENTS; CALIX[4]ARENES; CALIXARENES; DIFFERENT SIZES; GEOMETRICAL FACTORS; HETERODIMERIC CAPSULES; HETERODIMERIZATION; HOMODIMERS; SELF-ASSEMBLY SUPRAMOLECULAR CHEMISTRY; UREA GROUPS;

EID: 77950856663     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.201000024     Document Type: Article
Times cited : (18)

References (51)
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  • 26
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    • The formation of heterodimers was initially even considered as an additional proof for the dimerization: O. Mogck, V. Böhmer, W. Vogt, Tetrahedron 1996,52, 8489-8496.
    • (1996) Tetrahedron , vol.52 , pp. 8489-8496
    • Mogck, O.1    Böhmer, V.2    Vogt, W.3
  • 34
    • 77950790618 scopus 로고    scopus 로고
    • The attachment to the meta-position allows the symmetrical construction of adjacent loops up to the tetraloop derivatives
    • The attachment to the meta-position allows the symmetrical construction of adjacent loops up to the tetraloop derivatives.
  • 36
    • 77950818955 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2009, 45. 3867-3871.
    • (2009) Angew. Chem. Int. Ed. , vol.45 , pp. 3867-3871
  • 37
    • 77950812614 scopus 로고    scopus 로고
    • The heterodimer ld-7c was finally formed in two weeks after mixing
    • The heterodimer ld-7c was finally formed in two weeks after mixing.
  • 38
    • 77950788739 scopus 로고    scopus 로고
    • It is not even necessary that all calixarenes are mixed in stoichiometric amounts, as only the respective pairs must be present in the same quantities
    • It is not even necessary that all calixarenes are mixed in stoichiometric amounts, as only the respective pairs must be present in the same quantities.
  • 39
    • 77950817816 scopus 로고    scopus 로고
    • Statistically seven tetraureas (la-d, 7a-c) allow 28 combinations, among which six are impossible due to an overlap of loops, and an additional six are also impossible due to their bulky residue(s), which cannot pass the loop(s)
    • Statistically seven tetraureas (la-d, 7a-c) allow 28 combinations, among which six are impossible due to an overlap of loops, and an additional six are also impossible due to their bulky residue(s), which cannot pass the loop(s).
  • 41
    • 77950818208 scopus 로고    scopus 로고
    • The remaining two urea residues of the monoloop compound must bear bulky substituents. Otherwise it can also build a homodimer
    • The remaining two urea residues of the monoloop compound must bear bulky substituents. Otherwise it can also build a homodimer.
  • 42
    • 77950847695 scopus 로고    scopus 로고
    • Even after one month the heterodimer cannot be detected
    • Even after one month the heterodimer cannot be detected.
  • 43
    • 77950853198 scopus 로고    scopus 로고
    • α, protons, attached to the urea res- idues R (Scheme 1 ). Due to the strong hydrogen bonding formed with the O=O oxygen of the adjacent urea function these resonances are shifted to the low field of the spectrum and can be observed aside from other signals
    • α, protons, attached to the urea res- idues R (Scheme 1 ). Due to the strong hydrogen bonding formed with the O=O oxygen of the adjacent urea function these resonances are shifted to the low field of the spectrum and can be observed aside from other signals.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.