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Volumn 61, Issue 7, 1996, Pages 2564-2568

Selective lower rim reactions of 5,17-upper rim-disubstituted calix[4]arenes

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EID: 0343630752     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo952013e     Document Type: Article
Times cited : (18)

References (25)
  • 2
    • 5244320970 scopus 로고    scopus 로고
    • The term "calixarene" is variously employed in different contexts. In colloquial usage (as employed in the Discussion section), it implies the presence of hydroxyl groups. In the more precise and complete specification of a compound (as used in the Experimental Section), it implies only the basic skeleton to which the substituents, including the OH groups, are attached at positions designated by appropriate numbers as shown in the following structure. (Matrix Presented)
    • The term "calixarene" is variously employed in different contexts. In colloquial usage (as employed in the Discussion section), it implies the presence of hydroxyl groups. In the more precise and complete specification of a compound (as used in the Experimental Section), it implies only the basic skeleton to which the substituents, including the OH groups, are attached at positions designated by appropriate numbers as shown in the following structure. (Matrix Presented)
  • 3
    • 0000033877 scopus 로고
    • Calixarenes
    • Stoddart, J. F., Ed.; Royal Society of Chemistry: London
    • (a) Gutsche, C. D. Calixarenes in Monographs in Supramolecular Chemistry; Stoddart, J. F., Ed.; Royal Society of Chemistry: London, 1989
    • (1989) Monographs in Supramolecular Chemistry
    • Gutsche, C.D.1
  • 16
    • 0000314599 scopus 로고
    • Dijkstra, P. J.; Brunink, J. A. J.; Bugge, K. E.; Reinhoudt, D. N.; Harkema, S.; Ungaro, R.; Ugozzoli, F.; Ghidini, E. J. Am. Chem. Soc. 1989, 111, 7567. Gutsche, C. D.; Reddy, P. A. J. Org. Chem. 1991, 56, 4783.
    • (1991) J. Org. Chem. , vol.56 , pp. 4783
    • Gutsche, C.D.1    Reddy, P.A.2
  • 17
    • 5244220557 scopus 로고    scopus 로고
    • Attempts to prepare a dinitrocalix[4]arene by nitration of calix-[4]arene or its ethyl ether led to mixtures of the tetranitro and dinitro compounds (see Experimental Section)
    • Attempts to prepare a dinitrocalix[4]arene by nitration of calix-[4]arene or its ethyl ether led to mixtures of the tetranitro and dinitro compounds (see Experimental Section).
  • 18
    • 85087582004 scopus 로고    scopus 로고
    • 3 (50 equiv) was employed in very dilute solution, the product was the 1,3-alternate conformer, but the cone conformer was the major product when a more concentrated solution was used
    • 3 (50 equiv) was employed in very dilute solution, the product was the 1,3-alternate conformer, but the cone conformer was the major product when a more concentrated solution was used.
  • 23
    • 85087581979 scopus 로고    scopus 로고
    • 1H NMR resonance of the tert-butyl groups generally moves upfield from its position at δ 1.24 in the starting material
    • 1H NMR resonance of the tert-butyl groups generally moves upfield from its position at δ 1.24 in the starting material.
  • 24
    • 5244353431 scopus 로고    scopus 로고
    • note
    • 6 (40.0 ppm), or TMS (0.00 ppm) and also recorded at room temperature (20 ± 1°C). Microanalytical samples were dried for at least 48-72 h at 111°C (toluene) or at 140°C (xylene) at 1-2 mm, and the analyses were carried out by Desert Laboratories, Tucson, AZ. Solvent of crystallization was retained in some of the analytical samples and affected the elemental analysis. In such cases, best fits between the analytical values and appropriate increments of the solvents were used.
  • 25
    • 85087582023 scopus 로고    scopus 로고
    • 6
    • 6


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.