The confined cavity of a coordination cage suppresses the photocleavage of α-diketones to give cyclization products through kinetically unfavorable pathways

被引:77
作者
Furusawa, Takahito [1 ]
Kawano, Masaki [1 ]
Fujita, Makoto [1 ]
机构
[1] Univ Tokyo, Sch Engn, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan
关键词
alpha-diketones; cage compounds; cyclization; photochemistry; self-assembly;
D O I
10.1002/anie.200701250
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Figure Presented) It's a trap: The photochemical homolytic cleavage of an α-diketone leading to degradation products was suppressed through the encapsulation of the diketone in a self-assembled cage. Instead, intramolecular cyclization products were formed through otherwise unfavorable (kinetically hidden) reaction pathways. This provides an approach to find new reactions of photolabile compounds that had been abandoned because of predominant cleavage reactions. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:5717 / 5719
页数:3
相关论文
共 25 条
[1]  
Cram D. J., 1991, ANGEW CHEM, V103, P1048
[2]  
CRAM DJ, 1991, ANGEW CHEM INT EDIT, V30, P1024, DOI 10.1002/anie.199110241
[3]   Some remarks about free radicals and the photochemistry of solutions. [J].
Franck, J ;
Rabinowitsch, E .
TRANSACTIONS OF THE FARADAY SOCIETY, 1934, 30 :0120-0130
[4]   SELF-ASSEMBLY OF 10 MOLECULES INTO NANOMETER-SIZED ORGANIC HOST FRAMEWORKS [J].
FUJITA, M ;
OGURO, D ;
MIYAZAWA, M ;
OKA, H ;
YAMAGUCHI, K ;
OGURA, K .
NATURE, 1995, 378 (6556) :469-471
[5]   Water-soluble dendrimers as photochemical reaction media: Chemical behavior of singlet and triplet radical pairs inside dendritic reaction cavities [J].
Kaanumalle, LS ;
Nithyanandhan, J ;
Pattabiraman, M ;
Jayaraman, N ;
Ramamurthy, V .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (29) :8999-9006
[6]   Controlling photochemistry with distinct hydrophobic nanoenvironments [J].
Kaanumalle, LS ;
Gibb, CLD ;
Gibb, BC ;
Ramamurthy, V .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (44) :14366-14367
[7]   A PRACTICAL PHOTOCHEMICAL-SYNTHESIS OF BICYCLO[1.1.1]PENTANE-1,3-DICARBOXYLIC ACID [J].
KASZYNSKI, P ;
MICHL, J .
JOURNAL OF ORGANIC CHEMISTRY, 1988, 53 (19) :4593-4594
[8]  
Kusukawa T, 2001, ANGEW CHEM INT EDIT, V40, P1879
[9]  
Kusukawa T, 1998, ANGEW CHEM INT EDIT, V37, P3142, DOI 10.1002/(SICI)1521-3773(19981204)37:22<3142::AID-ANIE3142>3.0.CO
[10]  
2-9